I am a regular user of Escrow.domains / EscrowDomains.com, and lots of brokers have migrated over there due to KYC challenges and other issues at Escrow.com. It's run by domain lawyer Stevan Lieberman, who is a great guy.
Escrow.com KYC is very stringent ... the other platforms less so. Sedo barely has any, which is why I use it for folks who object to Escrow.com level of KYC.
it would be interesting to know what the kyc rules actually are and whether escrow.com goes further than necessary or if the others aren’t doing their jobs.