Vertcoin (VTC) is the coin of the Vertcoin enterprise. The coin is featured by a few exchanges and can be mined. The Vertcoin project has developed the “Proof-of-Work” algorithm called "Lyra2RE". Vertcoin was designed to serve as the graphics card mined version of Bitcoin. Therefore, one of the team’s goals is to make the mining process more affordable. Recently, the team decided to release updates on a quarterly basis instead of monthly updates.
Time New Bank (TNB) is an ERC-20 token that is currently undergoing a gradual swap to its own mainnet. This is the settlement token for transmitting assets based on value of time. At the time of writing, you can trade an Ethereum-based TNB token against USD on the Bitfinex exchange.
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.