PHO, MIL, SAC, and MIN are the only ones that stick out as having both an interesting aesthetic, and a creative or classic flair.
There are a few that are inoffensive but but boring/unoriginal: ATL, BOS, CHA, DAL, HOU, NY, ORL, POR, SAS, TOR, UTA)
A few are an okay concept with varying degrees of clumsy execution: DET, LAL, GS, CHI, CLE, MEM, NOLA, OKC, PHI
And then there are abominations that I’m embarrassed the players have to wear: IND, LAC, WASH, BKN, DEN.