Generally a connector manufacturer would make these, Amphenol, Aptiv (formerly Delphi), Cinch, JAE, JST, Molex, TE Connectivity, Yazaki. See Mouser for some exa

Generally a connector manufacturer would make these, Amphenol, Aptiv (formerly Delphi), Cinch, JAE, JST, Molex, TE Connectivity, Yazaki. See Mouser for some examples(https://www.mouser.com/c/connectors/automotive-connectors/# https://www.mouser.com/c/connectors/automotive-connectors/#) Usually they create their own design so maybe having an open standard would allow you to do contract orders with any plastic injector that has the molds.