Analysis
Brought the original stuff in here so I could do a good comparison
Warm colors describe units on which you will place the majority of your order markers.
Cool colors describe units that are good even when they don't take many turns.
Purple and dark red describe units somewhere in between.
Black units should be avoided when making pre-made armies.
Bread and Butter
These are the types of squads on which you never regret putting an order marker. You get a lot out of each turn, and they are usually durable enough to see their next one. In the case of bonding units, it is usually assumed that you’ll use the appropriate supporting players (i.e. Krug and Swogs for Arrow Gruts, appropriate Champions for Knights and Gruts, etc.) It is not uncommon for you to spend all three of your turns on (or build armies around) units like these. Beginning with Master Set 2, Marvel, and Wave 8, we are also starting to see some heroes who function similarly- these heroes will from the core of your army and dispense their orders to swarms of commons or lesser heroes.
Uses: Build an army around these guys: they can do it all. Get more of them (at least 2-3 of the same common squads.) They don't work well in conjunction with Sharks (discussed below.) They work great with Cheerleaders.
There is maybe one B&B squad in C3G (Gorilla City Warriors) that is very good. Everything else is meh. (assuming I'm not forgetting one) Most fit under Orang's Commander point. Prof X., Heinrich Zemo, Mr. Fantastic, and even some like Commander Rogers. While they don't quite match Jexik's definition, this one fits decently well here with the exception that because the Commander units are often taking turns instead of they are actually great uses for Sharks since once the unit dies you don't lose an Order Marker.
Cheerleaders
These units are better seen and not heard. You might put an order marker or two on them in the early rounds to get them into position, but after that, they really don’t give you all that much out of a turn. They also usually have some sort of powerful aura that makes them actually useful without a single order marker on them! You should do your best to defend them, as your opponent will often try to ambush them. These units won’t kill their points-worth most of the time, but they will enable others to do much more.
Uses: These fit in well with any army that they can apply their bonuses to. Just make sure to pick up enough units to actually go out and kill stuff for you.
Invisible Woman, Destiny, Bane, Vertigo, Captain America (C3G). This one fits in quite well except on occasion the cheerleader is actually worth several turns or Order Markers themselves.
Defenders
Very simliar in order marker usage to Cheerleaders, but the main difference is that you want them to draw fire. That’s what they do best. If a Squad, they make great glyph-securers, and map controllers. If a Hero, engage the biggest thing you see.
Uses: Your goal when using this type of unit isn't to run around killing everything. It's to force your opponent to waste turns attacking them instead of your more vulnerable and/or dangerous figures, like Sharks, Cheerleaders, any ranged units, or Menacers (discussed below).
Blob, Krypto/Robin/Wasp, Jocasta, Beat Cops, Aaron Cash. Here is where I would argue that Defenders work a bit differently in C3G. You still have some dudes who fit the definition but then you have figures that you need to attack first or else they are going to make your life absolute pain.
Sharks
These units appear at first to be identical in use to Bread and Butter units. They have lots of power and/or range, and they usually aren’t a waste of an order marker. However, the main difference between them and BB units is that you have to keep putting order markers on them: they have to keep moving or they die. They’re usually one or more of the following: unique, low defense, or expensive point-wise. They have an uncanny knack for drawing attention: once you activate them, you’ve gotta keep activating them and see how much havoc they can wreak.
Uses: These work well with Defenders first, and then Menacers and Cheerleaders about equally. Use the Defenders to tie up your enemies and allow the Sharks to choose their prey. Sharks and Menacers can both act as decoys for each other; pay attention to which group your opponent seems to focus on more and exploit that point. Cheerleaders might make them actually stand around for a bit longer than you think. Additionally, it is also important to note that Sharks do not make very good glyph holders. They need to take advantage of their mobility and attack values. Sitting in one place is a waste, and a common mistake when using Airborne Elite.
Healing X Factor peoples, Satanus, Stepford Cuckoos. I struggled here. Most things that deal a lot of damage are usually pretty sturdy. There's a lot of worse ones but there are not a whole ton of Sharks in C3G that I can't argue are also Menacers.
Menacers
Your opponent treats these units very much like Order Marker Sharks. They see them, and they do everything they can to kill them. The big difference is that these guys can actually take the punishment. Menacers combine high offense with high defense: this means that an order marker on them is not a waste, but you also don’t need to worry about them getting taken out exceptionally quickly. These guys are an excellent place to drop your X. I suppose the only real difference between these guys and BB units is the amount of fear they seem to bring out in opponents despite the fact that they often have fewer attacks than BB's.
Uses: Similar to Sharks, only that they aren't as reliant on Defenders to be functional. They can make decent glyph-holders in a pinch.
Thor, Superman, Dark Phoenix. A lot of Menacers exist in C3G.
Cleanup
These are usually single-based, ranged heroes that you just sit in the back and hope your opponent simply doesn’t notice them, or isn’t able to reach them until very late in the game. They don’t have enough attacks to be useful early on because they’d get taken out by enemy squads, but late in the game, they’re able to pick apart the survivors with alarming alacrity. They play very much like Sharks, but the key is just to wait until later on to use them.
Uses: Depending on points, they can work well in nearly any army. Just try to keep them alive until it's their time to shine. Defenders and/or a sturdy Bread and Butter force are a plus.
In a game that is very hero dominated, I don't feel comfortable nominating anyone as especially good at Cleanup. Maybe somebody like Wendigo or Carnage.
Niche
Heroes, heroes, everywhere, and not a squad to bond! These are usually heroes that just don’t do enough on their turn to warrant an order marker (or points). These are the types of units that can be very useful in the right situation, but they are always a risk. If they ever add a unit that bonds with these guys, watch out! The squads mentioned are usually terrain specific or just kind of make you wonder why you spent an order marker on them. However, as an astute Top Chef contestant once put it it: "Sometimes, there's a fine line between being competitive, and just being an [abrasive individual that nobody really likes]." Don't be afraid to use these units with your friends; many of them are quite fun and interesting. Being put in this category isn't necessarily saying a figure is 'bad.' Some, like Theracus or Emiroon, can be extremely useful in the right situation, but their powers aren't directly related to beneficial auras, powerful attacks, or protecting other units, and their powers still require order markers to use.
Conclusion
People often forget order marker usage when designing an army. This is the main reason that people suggest using at least two of any common squad: most become an absolute waste if you only field one squad-they just don’t justify the point investment, and become a huge risk for order markers. Bread and Butter units work well when you just get a ton of them and weigh your opponent down with figures, with perhaps some cheerleader support. Additionally, taking an army with a ton of Cleanup figures and Sharks is doomed to failure if you don’t adequately protect it with some Defenders and/or Cheerleaders.
With so many commander type units, the only way for a unit to be niche is for is it to not be very good a la Penguin or Ventriloquist.
Now one of my complaints with this system is that there a lot of units I can't really fit into any category. Ozymandias and the Joker (I) are both very good but they're both decently fragile and are not very good at attacking but they are amazing at disrupting an enemy's strategy so they don't really fit into Defender, Cheerleader, Menacer, or Niche category.
I would also argue there is an insane amount of hybridity across the board in C3G.
One more thing to consider is that in Jexik's original article it was about selecting armies so that you didn't give yourself order marker nightmares hence his categories and what works well with what. In C3G sharks can work well with B&B units and synergy is oozing out the wazoo. Plus with so many units, the combinations are incredible.
I don't know if it's particularly helpful to just say "X unit is Y Category" but we also need to look further into designing a C3G army and how that design will affect your Order Marker placement.
~Dysole, rambling