Like BCH and BSV, they become exaggerated and not good for long-term holding. Yes, it may be profitable but for a short time. If you want to invest in cryptocurrencies, you should choose Bitcoin over BitcoinCash. Bitcoin is far more profitable in every way.
First of all, you need to differentiate between BCH and BSV. As of now, everyone knows that BSV is a pure scam coin. It's exchange rates and trade volumes are manipulated and the liquidity is very limited. I have a more favorable opinion about BCH. It is being supported by a lot of the industry heavyweights and it somewhat addresses the scaling issue (which is yet to be properly addressed by BTC).