Like others have shared, there are legendary pro submissives who've been around for decades. While companions and BDSM practitioners who are professional submissives aren't new, I do think we're fewer and farther between than even professional Dommes.

There are a couple of highly regarded collectives of kinky GFE companions such as KLE Collective in the UK. Ultimately, if one is especially motivated to partake in a niche fetish experience, they'll seek out and find what they're looking for.