The "Real Bitcoin Dominance Index" claims to include only "hard money coins", yet includes actual ICOs (ETC), premines (DASH, DCR), founders' rewards (ZEC), 51%-reorged garbage (BTG, ETC), fork-trash (BSV, BTG, BCH) and inflationary coins like DOGE.
Wow, such hard monies.
https://twitter.com/michael_saylor/status/1307661319043244038
Wow, such hard monies.

You can still be a bitcoiner and recognize that this list is absolute nonsense. The person who made the filter simply does not understand what he's doing. Not only is it stupid, it's also incorrect and inconsistent.
And to address @michael_saylor's point, native coins of crypto-application networks are probably the most potent contenders to BTC. ETH is infinitely more likely to succeed as money than absolute trash like Bitcoin Gold. Exclude smart contract coins if you want to fool yourself.