We speculate plausible assumptions that are likely to be wrong all the time trying to converge universes. It's okay to fail, as long as you're interesting while doing it. Or at least that's how I am operating in quite a few threads on this bbs.
In Marvel Comics, in the late 1960s, in an uncanny X-men, by Claremont, in a flash back episode, when Xavier knocked up Gabrielle Haller with their child David, which at the writing of the book was probably the late 60s or early 70s... Strucker has collected all his billions in Nazi Gold to one place because he was ready to found Hydra and take over the world.
Magneto pantsed him, and took the gold.
Comics Strucker uses a Hydra verion of the infinity formula. He's old as dirt.
Just becuase we hadn't seen Strucker in First Avenger, it doesn't mean that he wasn't having a gay old time doing donuts in formation with Rommel in Africa, but then the character might not have existed at all conceptually out of frame.
So, still the ame question...
Same guy (that we have never met) or grandson?