I think there is no other coin that is able to take the position of the king over bitcoin-ethereum, because the coin has a very high value and a very sophisticated blockchain system, so it is very difficult to beat because btc is the mother of all coins.
Indeed, BTC is made as if by a perfect coin, we hope that this will be so, because in general, there are a lot of options tied up there that depend only on the community, the only problem is the power of 51% percent.