So what does 'parent' actually mean? If Bitcoin does not have any parent and those coins 'forked' it, why you assume those 62 repos are 'parent'? Can you give the names of these parents?
The "parent fork" is intended as repo mostly used to create new cryptocurrency but different than bitcoin, for example: PIVX, Ethereum, Monero and so on..
I cannot include the full list of this parent because it is in an evolving stage.