Polkadot (DOT)

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.

OByte (GBYTE) coin is the internal currency of the OByte data platform and featured by a few exchanges.

Particl (PART) privacy coin fuels the Particl ecosystem. You can buy the coin on the number of custodial and non-custodial exchanges alike. The fiat purchase with EUR is supported by the Litebit exchange.