I’d go visit each of the team subreddits, and you’ll get a decent idea of the fanbase’s [online] culture. Widdle it down, and then decide which team has the players that interest you most. Offhand OKC, POR, SAS, SAC all have pretty good fanbases, a promising future (bit rough in POR rn), and some fun to watch players.

I only recommend checking the team subs because becoming a fan of a team is somewhat like joining a community, and some of those communities are fucking unbearable.

Edit: Also may seem silly, but maybe consider the team’s announcing crew too. If you watch frequently, you’re going to be spending a lot of time listening to those guys. Like I love Eric Collins (Hornets), but I’m sure he’s too much for some people.