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Is this the complete list?
At least of the most poplular ones. Anyone can fork Electrum and make a custom wallet for their coin. So the list will probably never be complete (unless you start hunting every fork there is). I wouldn't bother with it. Those are most likely the only ones which coins have any value.
For example, after a quick scroll on Electrum's repo fork list, I've found:
electrum-pivx
electrum-drk
electrum-stratis
electrum-bca
electrum-smart
And we can't even know which ones are legit or just a fake malware-wallet.
Yes there have been cases of what seemed to be genuine forks on github but later revealed to be fake, full of malware which stole crypto.
People need to be very careful about what software they download