Just a curiosity, but Edge has 2 private sets of fonts located in:

\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\Assets\Fonts

called

BrowserMDL.ttf

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ID:	54943

containing the browsers Asset characters

and

ReadMDL2.ttf

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Size:	18.4 KB 
ID:	54944

Containing the Reading mode animation characters

These are not installed in the general Windows fonts store, but can be if wished.