I don't have any suggestions of coins in mind but I believe there will be many coins that'll do well immediately the bull market starts. Alot of investors are waiting on the side to get a green signal that the market is back and usually the influencers are those they rely on for this kind of news and immediately that starts happenings, you'll begin to see money entering the market
Alot of project both good and bad ones will benefit as they usually do during the bull market. I'm confident that altcoins will do well because not everyone would want to buy Bitcoin that they know can't give them much profits but many people investing wants to make money quick so they'll go for altcoins. To profits we have to be among early investors.
I think coins in the top 20 should be given much attention for security purposes and they can also give good returns as if you invest when the market is down, you'll be among the earliest investors and can profit when the whole market rise.