Another potential site to check would be
https://escortbabylon.net/.It is an offshoot of alligator, but its limited to ads that have >1 user reviews, and I've sometimes seen ads on there that I don't see on the other sites you provided, or see a provider start out on babylon then transition to tryst or something after some time.
Would note that it is typically limited to providers on the lower end of the price range, and sometimes has fake comments/reviews for some providers. On the plus side, it shows historical posts, photos, and sometimes even videos associated with a provider (given they haven't deleted them), so it becomes a little easier to tell the difference between a provider who has been advertising for some time vs. a brand new, likely B&S provider.