Would the House vote to make Trump the President, if neither candidate receive a plurality of electoral votes? Yes, there are enough RW wing nuts there to do that.
First of all, if the choosing of the President devolves to the House the members do not vote individually. Votes are cast by the representation of the several states, with each state having one vote.
Second, exactly how many "RW wing nuts" do you think are in the House? They elected Ryan as Speaker, didn't they? Seems pretty clear that the lunatic tea party fringe remains little more than a vocal obstructionist minority.
Third, you
do realize that the Republican party establishment loathes Trump, right? And that they don't trust him for a second to do anything good for the country, nor be even at least be a useful party pawn, right?
If the choosing of the President devolves to the House, with the options being Trump, Bloomberg, or the Democratic candidate, I have no doubt that Bloomberg would easily be selected. He would be embraced by elements on
both sides of the aisle. House Republicans would prefer him over Trump. Many House Democrats would prefer him over the risk of Trump. And many on both sides would love the chance to play a heroic role to not be bound to partisanship to support someone who is capable of
governing.