But remember Le Pen lost by a 2:1 margin in the run off. Even in Switzerland the UDC are only the 4th largest party in the conseil des états, where you need to run off votes; and while Hofer almost pulled off the run off in 2016, the Austrian presidency is a largely ceremonial role which would lend itself to protest voting.
given that those are pretty much the three West European countries with the strongest RWPP traditions - I think we can say there aren't many places where a Trump style populist would win in a two party run off (and bear in mind that most right wing voters in Europe would have chosen Clinton over Trump - and not for her economic positions).
Winning the nomination and eventually the general election in a two party system vs winning a run off in a multi party system is an apples to oranges comparison IMO. Party loyalties and the thought process going into one's vote are a tad different. It seems much easier for a lifelong GOP voter to rationalize voting for a GOP ticket with Trump on it than a lifelong UMP/LR voter to rationalize voting for a LePen Front National ticket.
In the same vein, a Corbyn win would not indicate to me that the UK is especially anti-semitic and I would be skeptical he'd do as well as he currently is in a French style multiple party system.