Somebody said on a different post that they think an onlyfans agency found this site and is trying to tap into it. Those girls are all presumably working with the agency.
A social media promotion agency is just auto posting the same generic posts. They are bad at their job and use the same generic titles, bios, and post all their clients at the same time making it very obvious.
Just downvote, block the user, and move on with your day. If the mods don't specifically disallow the behavior there isn't much that can be done unfortunately. The mod of !Ass@Lemmynsfw updated the rules to not allow promotions anywhere in a post so at least there's hope.
Now then downvoting on lemmynsfw is no more (lets hope temporary as they say), expect to see bot content more and to play more of a whack (block) a mole game.