Products Category - small PHP tweak needed

[veganline]

I want to use Block Category Products aka ProductsCategory as intended, to show other products from the same category in the footer of a product page.

I also want to have all products in a single category called "home" as well, so the module shows up to 100 products from all categories in the footer and sells less.

productscategory.php looks like the file that selects products.
The action seems to start about line 109
Does anyone know how to tweak it so that it only shoes categories higher than a certain number?

Background info
veganline.com is the web site
Category ID. 2 "Home" includes all my products. Most are also in 
Category ID. 8 "Search by Size". These are the two lowest category IDs.
My other categories are all more narrow and descriptive, like "belts" and "sandals", and more useful to show in the footer.
I don't show prices in the footer; just thumbnails.
The reason for "Home" is just to reduce the middle breadcrumb layers that show. I use breadcrumbs in large type instead of headers. There might be other ways of doing this, but I also have a "Search by Size" page in the categories, 

Edited January 1, 2021 by veganline