Your efforts are greatly appreciated but scam exchanges and scam projects appear every day so we cannot list them all. Also, I feel it will take a long time to find scam exchanges, it would be better if you just focus on creating a list of trusted exchanges and a fake list of reputable exchanges.

Using centralized exchanges is risky as they can freeze accounts or worse, crash like FTX. So use only top exchanges like Binance and only use it to trade, buy and sell, don't leave assets on exchanges.