Bitcore (BTX) cryptocurrency is based on its own blockchain and was established as a hybrid fork of BTC in 2017 through creating a new empty blockchain. Bitcore is represented on a few exchanges (mainly against BTC) and wallets. You can mine this coin.
THEKEY (TKY) is the token of the Chinese government endorsed blockchain based identity verification ecosystem. The token is currently based on cryptocurrency NEO protocol. It is listed on a few exchanges paired against major crypto coins.
TRON is a blockchain-based entertainment platform with its native token TRX. The mainnet was launched in 2018. The platform is supposed to be a cheap way to consume entertainment content and easily share it. TRON is capable of hosting entertainment content and DApps.