Every time the CJ/Wrangler has been designed or redesigned, a different company has done the work:

Original: American Bantam

CJ-2/3: Willys-Overland

CJ-5: Kaiser-Willys

YJ Wrangler: AMC

TJ Wrangler: Chrysler

JK Wrangler: DaimlerChrysler

JL Wrangler: FCA