the original GBA Kingdom Hearts Chain of Memories
To this day, it's the only Kingdom Hearts I've been able to enjoy. I'm just not particularly interested in the main series gameplay, but combining a 2D fighter with a deckbuilding game really worked for me!.. Definitely could not get behind Re:Chain though, that crushed the entire aspect that makes CoM good.
One of my own answers that comes to mind is
Little Hope - most people consider it by far the worst Dark Pictures game and maybe not even good in general, but I got a lot out of it. My own vision of the events of the game seems to be pretty wildly different from the average, though.
I don't think it's reviled per se, but the amount of people who've even heard of
Egg Mania on the GBA is pretty small, and if you've played it you probably think it's some cheap junk... Well, it is, but it's also a pretty fun and addictive puzzle game. I want to get the GameCube version so I can play against friends someday.
I think
Dark Souls II has a good general rep, but the Souls community specifically likes to dump on it. I'd play it over any of the others in a heartbeat, I love the weighty combat and the way you have to take the levels seriously and approach them smartly.
For a game that's genuinely panned, yet I still like it... I guess I'd say
Crash Purple. I had both it and Spyro Orange as a kid, and while Orange is a pretty genuinely terrible game since it just invented a bunch of poor quality minigames, Crash Purple was based more on existing minigames from the other Crash GBA games, so it feels more like a proper game to play despite still being a glorified minigame collection.