Mixin (XIN) is an ERC-20 compliant utility token of the open Mixin messaging platform that serves for easy transfers of crypto. The token is available with a few exchanges.
As of now, Quantum Resistant Ledger (QRL) coin is represented on a few exchanges paired against BTC. Originally being an ERC-20 token, it switched to its own mainnet in 2018. The QRL claims to be the first decentralized cryptocurrency, that is resistant to both classical and quantum computing attacks.