As others have said, there are tons of coins out there which have their own blockchain.. XRP, ALGO, ADA, MATIC, BNB, and CHR would be just a few..
Yes, and I think they are all still not better than the ETH blockchain even though in terms of transaction fees ETH is still in the most expensive category apart from the blockchain you mentioned even though all of them can be used by anyone who likes it because each has its own advantages.