To be clear, the left edge of liberalism is bernie sanders. Is that what youre saying?
Meh, I’d say Bernie is either a social democrat or a reformist socialist who hides his power level.
Some members of LDPR(e.g. Furgal) seem to be more left than Bernie. And LDPR is former LDPSU - first right-wing party of USSR. Or some members of Union of Right Forces.
Not corporate neofeudalist is better than corporate neofeudalist, which is improvement for US. But I can’t say he is on edge even of liberalism.