After looking at your models, I better understand your original question.

In my opinion, the best way to present multiple models is as follows:
1 - Gather all files of one model in a ZIP-file (OBJ, MTL + images of textures)
2 - Gather all ZIP files in an SH3F file

In this case I would probably make two groups: (1) kitchen cabinets and (2) accessories.

The way you presented the models now, means that you have to download all 40+ files individually, and then import them individually as well. That means a minimum of 6x40 = 240 clicks to import your models. If they were in two groups, you would need just 2x6 clicks.

Hans