The two most irritating sentences I find myself typing over and over on this website are:
1. "There are many pathways to universal healthcare"
&
2. "No, the Democratic party would not be a center right party in European countries either in social or economic terms"

& if you're going to come at me from the economic angle, plz do some research into EU center right parties. There's a lot of btwn-country variation, but these parties typically aim towards increased privatization of public systems & deregulation of industry. Dems do the opposite.

A related area is austerity. To look at recent history, examine how many EU countries chipped away at funding their extant safety nets, esp in healthcare, during the recession. What did the US do under Dems? A massive expansion of healthcare.

Now, the ACA is far from perfect and I want a much greater public role as well as the eventual minimization/near-elimination of private insurance in the system. That said, it's simply true that the U.S. expanded our healthcare system when many EU countries were cutting theirs.

You can't just compare a party in absolute economic terms across countries. This is especially the case when you have massive generational differences in building of the social safety net/welfare state.