Our gyms are remarkably homo free except for LA Fitness at Grandview Yard and a few, very few, at Lifetime Dublin at Sawmill and 'Hard' road. There are also a few at Graceland LA Fitness so it all depends what you're looking for. However, the gayer the gym, the less friendly it is and with a palpable difference in attitude. I lived in LA for 30 years so I know attitude when I see it.
Lifetime at Easton is unpleasant because of the members and Dublin is getting that way because of a big change in demographics, but they are exceedingly nice gyms.
The Polaris LA Fitness at I-71 and Polaris Parkway is very very crowded during the after work hours at this time of the year, but also is a super friendly gym where we're all friends. Powell LA Fitness is also very friendly, but less crowded, and at Sawmill and Seldom Seen rd. Powell has a bit more of a milf and giga milf crowd during late mornings and noon, but after about 3:00 it's Liberty High school there and a really nice bunch of guys.
Urban Active before the buyout by LA Fitness was terrible with a F BBB rating, which is pretty hard to do. It's better now and most of the equipment is fixed. Most of the staff are friends of mine so I get along just fine with them.