If you are concerned with mountains and grades there is a resource that can give you detailed information about any mountain grade. The information comes from a trucker who has driven most of these passes.
I have the iPad directory. There are books and I think online ebooks. The iPad directory is broken into 2 directions. One for the east coast and one for the west coast. I own both.
I find the maps a little crude but once you use them all the info you need is there. Check it out. It may be what you are looking for.
https://mountaindirectory.com/
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2016 Siverback 33IK, Towed 50K+ mile
2018 Ford F-350 Lariat 6.7L V8 Diesel 4WD Crew Cab
"If you don't know where you are going, any road will get you there."