I don't hold a lot of coins but I trade and have in past used many coins, I am sure more than 50 coins it not 100. Currently, I have like 8-10 coins and I buy/sell them daily so it's hard to name but there are some coins I have stored for their value in the future namely: DOT, ETH, BTC, TRX and ADA.

There is no fixed amount of coins either because when I face loss in my trading, I have to sell some of the coins and cover-up while at times when bull run is going on and I am on a roll, I buy even more coins and store them.

Another coin that is always there in my wallet is USDT but it is for the sole purpose of trading and never in my wild dreams I consider holding it because the value is going to remain the same.