Yeah, I think the best of the Simonson/Giordano collaborations was BATMAN 300...
https://readcomiconline.to/Comic/Batman-1940/Issue-300?id=17914

...But even on the best day, they weren't the most compatible art team. I think Giordano tended to clean up Simonson too much, and that interfered with the raw power of Simonson's work. I'm hard pressed to name any inker on Simonson's pencils who did justice to them, other than Simonson himself.

Marshall Rogers/Giordano was slightly better, but still not a perfect fit. I'm thinking of the Rogers/Giordano collaborations on DETECTIVE 478 and 479.
https://readcomiconline.to/Comic/Detective-Comics-1937/Issue-478?id=5720
https://readcomiconline.to/Comic/Detective-Comics-1937/Issue-479?id=5721