Just write your company name somewhere in the module description text and it will be found when users check the "other/unkn own" checkbox. If your modules are bit more known and/or you are ready to ship some you can apply for a manufacturer entry.
I understand that you find that "not right" but most users want to decide if they want to see the more obscure modules or the more polished ones. That's why we moderate the manufacturer entries.
It's all explained here: https://www.modulargrid.net/e/forum/posts/index/801
Beep, Bopp, Bleep: info@modulargrid.net