Model source indicators in Automatic

When a sole model source is selected, only that, single, model is highlighted - by an orange marker.

But when Automatic is selected, several models can be highlighted. What does this signify ?

VerminAl
It means that all of the listed ones are used. However, some of them may overlap — in such cases, the one with higher resolution should take priority in the overlapping area. So the global ones will always be underneath, and the regional ones on top.

Thank you.