If you are talking about how people play the character and get easy wins:
Shadow Jago: is negative I know, but it gets you easy wins throwing balls, teleport, dash grab cicles over and over again. And if they lag you and you can’t break Shadows is pretty annyoing, since connecting manuals isn’t hard with him.
Glacius (I’ve seen very bad players getting great results)
Maya (when going nuts and good execution she can be lethal throwings daggers non stop, guys that will guess break frame 1, waking up mashing shadow ALWAYS can put insane pressure and still win
Jago: just because his damage, you must be careful, if he gets you with a counter breaker will be bad
Hisako : some players can get easy wins with her just mashing, won’t be that good vs medium-advanced players.
Rash: similar to Maya, his nutty playstyle is annoying, and he has some really nice buttons to catch you offguard.
I hate Kan Ra and Gargos, but I believe ppl has to learn how to use them, so I respect that.
Arbiter and Raam just for their gamesplans?, but it’s not like I hate them, It’s ok. There do what they do, which is kind of monotonous, but I don’t mind, So I don’t know.
It’s tricky. As with most fighting games, there’s certain characters that very easily win at low level play, but once you start competing against people who know how to deal with your tricks, you sort of hit a wall. Blanka would be an example in Street Fighter. There’s a balance going on. At first you might be able to win easily with Shadow Jago because of things like his strong zoning and instant-mixup, but since Killer-league players usually know what to do against that, it’s almost more impressive to see Shago in the top rankings.
In terms of “cheap” characters, I found I couldn’t really come up with one. There are certainly “strong” characters and characters that I find annoying and/or hate playing against, but I couldn’t really bring myself to label any of them cheap per se. They have very pronounced strengths that I dislike, but I generally find them to have appropriate weaknesses to go alongside those strengths.