The last avatar that you posted is FLEUR By nikkiepng, as for the others i have no idea. It looks like a custom avatar to me. A mix of 𝑷𝒓𝒆𝒔𝒔𝒊's avi's and Nacho_`s.

https://nachoo.gumroad.com
https://sexual-pressure.sellfy.store
https://nikkiepng.com/products/fleur