@Yanick I think that's pretty fair assessment. My thing is I don't know how many mainstream Democrats support the "far left" option. Pelosi, Scuhmer, Clintons, Obama, Perez don't support single payer, a blanket gun ban, carbon tax/subsidized solar, etc. The Bernie/Warren wing, which is growing, supports some of the "far left" economic stuff you mentioned.
In terms of foreign policy, there's not a dove in the Senate and just a handful in the house-- Barbara Lee, Tulsi Gabbard and some isolationist Republicans. When it comes to military intervention there is no left in this country's national politics.