i created the picture
it's based on the well-established political science concept of
separate economical policy and social policy axes
the main criterion i used to make placements on the left-right axis was likely outcome of polices on economical inequality and tax revenue per GDP ratio, as determined by budget proposals
this is how USA compared to other countries in tax/GDP ratio in 2016:
hillary ran on increasing taxes
by roughly $50 billionsper year (yes i know, the source is conservative, but if anything that would mean they overstate how much she would increase taxes) per year which is less than half a percentage point of GDP, which means the US under her (and most democratic party candidates') control would still be very much to the right compared to europe
bernie
ran on increasing taxes by $1500 billions per year which corresponds to a tax increase of about 8 percentage points of GDP, which would move the US up to about the same level of tax/GDP ratio as the OECD average, which would make USA under bernie centrist on an economical left-right axis compared to europe