Smash Ultimate (please no taxonomy argument here): Fan of the series in general. I love the games but don't like the competitive community. Playing around with everything Ultimate has to offer gives it a lot of variety.
BBTAG: This game actually got me into labbing. It's fun to hop on the lobbies and play a few games, and to try out new teams. My main regret is getting it on the Switch and missing all those online tournaments.
Soulcalibur VI: Fan of Soulcalibur since III. I love how a lot of the characters have their powers in lore worked into their movesets now, especially as a Kilik main.
ARMS: It's fun and has a good community. Being able to change the arms of each character gives you room to try new things while still sticking with your main.
Persona 4 Arena: This was my break in point for traditional fighting games, where I properly got motion inputs down and did things purposefully instead of mashing + spam.