Maybe we can talk about first what do you mean by "passive income". It's not like when you stake, yes, it's a passive income, the question is if it will surely yield you a good return. As your subject implies, you are looking for "top coins" therefore any top coins you can encounter can be considered but don't expect a high APY on the majority of those.
Not trying to change your plan but it would be better if you will play instead on top coins thru trading. Believe me, it's worth it compared to waiting for long thru staking. You can't expect much of good profit thru staking unless you are willing to spend decently just to achieve that passive income goal.