I obviously don't want to steal the thunder from Ruben Sim of all fucking people after a great expositional post like that, but it's made me realize I have a place to dump my own collected filth on this subject. Over the span of around two years (some time in 2018-the week in 2020 the site language filter outright blocked the word "condo"), I treated Roblox ERP content through a safari-style lens to gawk at the worst the site has to offer, and I still have quite a lot of screenshots from this time period. My intent here is to give more examples of what Ruben already detailed while displaying some variety in the fetishes on display.
Most of these screenshots were taken before Roblox's display name update, but to avoid confusion, the smaller names on profile pages with @ next to them are the players' actual usernames. My profile pages will also look weird because of an extension that forces the classic layout style.
First series of spoilers is sorted by usernames + fetishes to the best of my ability. Last I checked, a few of these people are terminated, but I wouldn't be surprised if most of the accounts listed here are still extant.