Change default icon

Summary

What are the available icon images in Sales Cloud?

Content

I created a new custom child object to account.  (I picked an icon when creating the object.)

After adding the object as a new tab on the Account page in the SUI, the default icon was different from what I selected for the child object.  In Page Composer, I found where I can change the icon, but I have no idea what images exist. (see screenshot)  Is there a master list of icons?  I'd like to pick an image that makes sense for the tab.

Thanks!

Doug S.