Where can I check/browse all the available PRO icons other than inapp?

I have some pro apps and I find it really hard to go through all the available icons and select the most suitable one. I constantly have to keep expanding by a few rows, and they are not particularly tagged well, search usually ignores many.

Is there a website where I can see them all in one and their tags?

Is it known which collections GlideApps uses?


I believe they are sourced from