Personally, I think this wave of altcoin trends will follow this order!

ETH-based altcoins — Due to Ethereum's outstanding performance, L2 liquidity is good and popularity is high, but don’t think about buying small coins; holding one main chain coin is enough.

Established public chains — After ETH runs its course, money will flow to the second tier, which is stable and can take advantage of market fluctuations.

New public chains — After the established ones run out, new coins will get their turn; there are big opportunities, but the volatility is fierce, so position control is essential.

Finally, ecosystem tokens / meme coins / small coins — These can only take off if the market is hot enough and there is sufficient capital; most will just be spectators.