Are you talking about the brake/parking/reverse light assembly? If so, are there numbers cast into the lenses that can be used to find replacements?
Not sure many alternatives will exist unless some manufacturer has found a more economical way to build the assembly. The economics of millions versus 100’s tends to drive what might be out there.
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
‘03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad