None of them had good reasons to clone Bitcoin, in a short answer. Bitcoin Cash is the most successful among the more than hundreds clone coins.

From that list and from the list of ETH forks, you can get your lesson that any coins clone the original coins should be considered as lower quality one (or zero?) and you should never put all your belief and capitals in clone coins. If you invest in clone coins, and see opportunities to get good profits, do it ASAP before it is too late for you to get profits and at worse get your capital back. If you are too late, you will end with losses.