Cycling in the high mountains. Alps, Dolomites, Pyrenees etc

I've booked our little camper on LeShuttle, heading out at the end of August & coming back just over three weeks later. Not got a huge amount of a plan yet, other than we're heading to the French alps (& possibly over Lugano at some point) & doing plenty of day rides from wherever we can stay.

Never ridden in the French alps (having stuck to the Swiss/Italian ones last time). Have created an (ambitious) map (square icons) of climbs I'd like to do (unlikely to hit them all), but it's a bit sparse so need to figure out exactly where we can stay/what we can link together. Does anyone have any recommendations of lesser known ones in the area?

List of things I'd like to do:

• Alp d'Huez.
  
• Lacets de Montvernier.
  
• Col de l'Iseran.
  
• Col du Télégraphe.
  
• Col du Galibier.
  
• Col de la Croix de Fer.
  
• Cormet de Roselend.
  
• Tour de France 2023 stage 16 (the decisive TT stage around Sallanches, seems like a fun idea).