those three coins are moving faster than other altcoins when the price of the btc goes up, the reputation also doesn't need to be doubted, especially eth, you're right. But no need to worry for some new coins, the most important is how the coins develop, you can start researching good coins like Tezoz and Tomochain.
Actually, Tezos (XTZ) and TomoChain (TOMO) are not really new in the market. They have been in the crypto market for years. They are two altcoins that have already made a great name and reputation. They have released products and even upgraded them several times. They are not to be avoided. What are to be avoided are those that are, as I have said, newly listed. Many of them have not even get past the beta stage of their products, have low volumes, have not name recall of their brands, and so on.