There are many great projects below top 100. As we speaks this list makes clear there are still altcoins under 100 which are profitable. Maybe not for the long term investment but for day to day trade:
Source: WorldCoinIndex
Source: WorldCoinIndex
There are coins that being pumped as there are still small groups who are playing around. It's needed to look deeper before you invest your money,
there are bots and manipulators around every exchange.If you failed to investigate you'll be easy getting trapped
and lose your money.
I never heard about these coins, they must be pump and dump coins. Many people lost a lot of money on these schemes, it's created with one purpose to scam masses and people who get in last. Admins of the pump and dump group, and some people close to them are the ones who profit from this, all others lose money and get left with wortless tokens. I don't like pump and dump coins and I try to stay away from them.