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.
Cosmos is a network which connects different distributed ledgers. It means that Cosmos helps to process interblockchain operations. Consensus algorithm used by Cosmos is Proof-of-Stake. Currently, the validators of the Cosmos ecosystem are forming an Inter-Blockchain Communication (IBC) protocol. The native token of the Cosmos system is ATOM.
Ignis is the cryptocurrency token developed by the renowned Ardor blockchain. Cryptocurrency pairs including Ignis are listed on the number of exchanges. There is a native exchange Ardor service, where you can buy this asset (as well as NXT and Ardor coins) for fiat and other cryptos.