The top altcoins are salona that will be popular in the market. For polka-dots, it seems like they are starting to appear again now, I'm sure salona, polka-dots will reach their highest price in December, these two altcoin projects are quite successful and are liked by many investors.
Solana and Polkadot are indeed good coins to invest in short or long term, but I don't agree with you who say that both coins will return to their highest levels by the end of this year considering the market is currently in a downturn so I think it's very difficult for solana and polkadot to reach that level in a very short time.