I'm a little surprised that only folks from the UK riding in the Alps. There are a number of tour companies, offering a range of tours ranging from mixing easier passes and places in flatland to hardcore pass hunting. There are bike rentals, too, for DIY trips. I've only ridden there twice, in '16 and '17, so what do I really know about pass hunting?
Two big take-aways from the second trip: mixing long rides (100-200 miles) and passes (they take much more time than expected) on the same day is a bad idea, unless crossing a pass is the only way to get to the destination. Remember "so many passes, so little time". I tried to fit far too many passes into a weeks and was seriously knackered at the end, and missed stops because I was trying to beat the clock. It looked so easy on the map. I'll be happy to discuss the details, including a way to ride your FJR in Europe for much less than might be expected.
FJR content: I was surprised that there few FJR's on the road. I saw maybe 4-6 of them during the week. (At the time I was on a BMW K1600GT - story for another thread)
I put together videos of each pass (except Sustenpass, when the battery pack went sour, and ditto for half of Oberalp pass). They're basically dashcam video of most of any pass road, up and down, with music to cover the "rushing air noise" on most videos. The idea was to let someone who's even vaguely thinking of going have an idea of what it all looks like.
Finally, Best passes: The Swiss passes, except for Furka pass, which even the locals don't like to drive over. Worst: A tie between the few Dolomite passes I rode and Stelvio, loaded with traffic, including The Camper From H***. I thought the 2nd try at the 48 turn road would go a little better. Hah! Silly me!
The Day 1 video may look tame at the start but there is a moment of serious "oh s***!" in there as well an amusing phone call towards the end. View this video directly in YouTube to get the playlist in the right order.