The regressive left actually is a better comparison. Primarily because there are many more of them than "white supremacists."
The left-polers (antifa,...) are supporting islam, and trans-mania, both of which oppress freedom of speech, scientific research, and women.
Open boarders anyone: that went so well for the indigenous peoples of the Americas and Australia,...

@Jacar Conservatives (or regressives as you call the conservatives) on the left are also a bit worrisome, but they lack any of the power of the far right. I doubt they compare at all in numbers, and it's likely you count anyone that isn't a bootlicker as a "left-poler".