Here's a link to Grell's signature series, WARLORD, every last damn issue.

The origin story that preceded the WARLORD series, in
FIRST ISSUE SPECIAL 8
https://comiconlinefree.com/1st-issue-special/issue-8
Also reprinted in WARLORD 11 with a few pages deleted.


WARLORD series
https://comiconlinefree.com/warlord-1976/issue-1

Grell did both pencils and inks on the first 14 issues.
After that Grell dropped to just pencils.
Issue 15 is inked by Grell/Joe Rubinstein.
16-40, 44, 48-50 by Grell/Colletta
41-43, 45, 47 by Grell/Bob Smith.
46 by Grell/Tanghal.

51-71 have Grell scripts, with others taking over the art, Mark Texiera, Jan Duursema, and then I think most compatibly Dan Jurgens starting with issue 63.