Are Deobandis from Ahle Sunnah?

Assim al Hakim says: no they aren’t.

https://www.assimalhakeem.net/are-deobandi-from-ahlu-sunnah/

And that a sunni should not marry a Deobandi.

https://www.assimalhakeem.net/sheikh-kindly-tell-me-what-is-the-major-difference-between-deobandi-and-ahle-salaf-and-is-it-favorable-for-a-n-ahle-salaf-girl-to-marry-a-deobandi/'

And also Islam QA says the same.

https://islamqa.info/en/22473