BCH ATL
If it ever had a use case, it's gone now with the widespread creation of stable coins which are now spreading to other currencies. They are mostly used in the crypto community for now but I could see them becoming a payment method more than I can see bcash becoming one. There are only so many use cases for crypto. Here's how I see it.
Value storage and transfer = Clear winner Bitcoin - Price needs to be 100x - 1000x to fulfill its role for the whole world
Smart contracts = Likely winner Ethereum - Works better with a low price to keep transactional cost low
Connection between the real world data and blockchain = Likely winner Chainlink - Works better with a low price to keep transactional cost low
Cash Payments/Stable transfers = Likely winner Stable Coins - Fixed price
Inter-blockchain swaps = No clear winner - Works better with a low price to keep transactional cost low
Decentralized finance = No clear winner - Value needs to be backed by bitcoin to work long term
Utility tokens or chains = No value beyond the micro transactional cost
Privacy coins = Likely phased out as winners improve privacy
Scaling solutions = Likely phased out as winners improve scaling