Many people believe that in order for bitcoin to survive, there must be a massive exodus to another platform, which will be more reliable and faster. Developers have worked out a solution called hard fork, thanks to which the Bitcoin Cash crypto currency was created. However, everyone understood that she might have her own problems, so another backup plan for another hard fork called Bitcoin Gold was also created.
Bitcore has bigger blocks than both bcash and gold and was there before any other fork was. Wonder why you didn't mention bitcore?
And fyi bcash or bitcoin gold are never part of a back up plan.