Those who know what these platforms are (or were) can likely see a pattern: they all boast high returns and invest in SMB:s and/or development projects. And they're all located in either Riga or Tallinn.
What other platform has similar characteristics? Crowdestor. However, I agree with explorep2p that Crowdestor still feels like being in a different category, never having promised early exit opportunities or bottomless buyback guarantees.
But at the same time: notice what platforms are completely missing? Consumer loans.