The IGN 1:25000 map for the Vosges region is a great starting point. I rode there for a weekend with Ash last year and it was some of the buffest flowiest single track I’ve ever ridden. I reckon it’s less technical than the Alps proper but can definitely put a smile on your face.
We went down with two cars and did two shuttle runs a day each run putting in about 500m uphill and about 1000m downhill.
As for the Alps, they are a pretty big place and you can’t tar them all with the same brush. I’ve ridden in most areas of Switzerland and each area has it’s own individual character and trails. The higher up trails are generally very rocky and can be very technical. You can generally find flowier stuff under about 2000-2200m altitude though. If you know where to look most places have something to put a smile on everyones face.