I'm creating a model-driven app and I want to select some default icon to show in the site map. As default there is a jig-saw puzzle icon that I want to change for example to led icon. This led icon is available in one Power Apps template app called "Innovation challenge" and looks like this:

I just don't know what is the name of this icon as in the template app site map designer the icon is just referred as "Use Default Image".
When I go to my own model-driven app clear the name of "Use Default Image" and scroll the icon drop down menu it only shows the names of default icons, but no any thumbnails or anything. So my question is that is there any place to browse this library of default icons to see the icons visually in one view so I don't need to try each of these individually and see the how it looks in the app?
App Designer > Sitemap Designer