Everyone has each definition of "legit" so maybe you can elaborate what do you mean by it. There are people who consider a specific coin as good to them but not to others. Try to find your set of factors.
To give a few of my best coins to consider, try adding BNB to your portfolio where what would be the reason should be obvious.
They become hype but it does make sense because these coins have fundamental use-case, unlike those other coins that just got hyped because of price speculation. However, no one knows what will happen in the future therefore we can't conclude everything if the same hype will happen again.
You really need to take action in order to see the actual result of your plan. Risky as it is but that's how investing in crypto works.