IVPN, Perfect Privacy, Mullvad all use blind tokens as well I believe.

There's also another company/product that has Port in the name I think, PortMonitor or... it's on the tip of my tongue. Anyway they have a paid version of the product that is essentially a series of servers (their own and user-donated servers) that tries to re-create the onion routing protocol, but with VPNs and blind tokens.

Edit: Postmaster with the Safing Privacy Network (SPN) https://safing.io/spn/