I've always been partial to tank and dps, two low maintenance roles in a traditional party. Back when I played Everquest live in 2000 I had a Paladin and a Monk I'd trade off on back and forth. Though I never got to do raids it was still fun to do small pick up groups in dungeons like Crushbone or Blackburrow where I tanked on the Paladin or did assist dps on the Monk.
I tend to lean DPS only because they have the most options. I'm all about vibes though, so I tanked WoW mythic raids as a paladin and a demon hunter. Healed as a priest briefly during Draenor because I found a specific outfit that looked super sick on my blood elf. I swap for the dumbest reasons like "this outfit is cute", "this spell effect is cool", "i really like this throwaway lore nobody else cares about".
Gameplay sometimes gets in the way though. I played Dancer in FFXIV because that game has too many situational buttons for me and I like simpler classes where you just press the light up buttons. Fight mechanics are interesting to me, but hyper optimizing rotations and spinning plates isn't. Demon Hunters had like 3 buttons you press for max DPS for a while.
Support is definitely my least played because its some of the highest cognitive load, critical to do well so you don't die, and holds a lot of responsibility. Meaning people will be mad at you if you fuck it up. Some people will say that about tanking too but I never felt it. Its just more knowing the boss mechanics and not having to react to other people in your group as much.
I also like meme or niche classes. Puppetmaster in FFXI, playing a battle priest or autospell builds in Ragnarok. Stuff like that.