I always thought Purple Man (Sinister #086) was a perfect dial, and sculpt, for Max Lord.

A couple of quick dabs of fleshy paint and voila! Instand Max Lord custom.

At least then he'd get some use, right?

Others who could potentially have the "formerly dead people" keyword:

Dr. Mid-Nite (Charles McNider)
Johnny Thunder
Wildcat (Ted Grant)
Earth-Two Robin
Earth-Two Wonder Woman
Hourman (Rex Tyler)
All of the above from Justice League of America #'s 124-125; although Hourman also "died" and "came back" in Spectre #7

Clayface (Basil Karlo) Pre-Crisis, died in Detective Comics #496; post-Crisis, somehow alive again

Lightning Lad (unless you buy the 90s retcon that says it was Proty)