Let me make an analogy. Bitcoin is the house of the cryptocurrency market and Ethereum is a car. What do you think of other currencies? LTC? EOS? SHIB? NFT? etc.
Other coins are passengers or occupants if you analogize bitcoin and ethereum as houses and cars, the foundations of both are basic tools to run cars and strengthen houses in your analogy, to achieve input or output from those foundations, for the other coins you mentioned I am more interested on LTC and NFT, apart from that I don't like and don't have an analysis of their development, so I don't want to bet on the future of other coins.