Sorry if I misread your post but...
... now that you've clarified your point (which I accept), I realize that, indeed, we are still missing on terminology.
Inherent in your post & reasoning is the presumption that democratic = leftist.
This I dispute.
There may once have been a bigger difference between Republicans and Democrats but today that is hardly true. Regardless, however, both are now, and have been for decades, parties of the ruling class.
Democrats are not leftists. Democrats are Republicans with a different corporate, I mean party, mascot.