Your screen-clip is the Library module view (not the Import dialog)- See below for setting information options.
I always see filenames under previews in the Import dialog-
And you can sort by File-type in the Import screen-
In Library Module- Grid View:
Press [Ctrl+J] to define the information on thumbnail 'Expanded Cell' borders-
Filenames also appear in the Metadata panel.
In Loupe view (single image)- Keyboard [i] toggles information on/off. Also set options in the [Ctrl+J] dialog Loupe View Tab.
Regards. My System: Lr-Classic 12.2 Photoshop 24.2, ACR 15.2, Lightroom 6.2, Lr-iOS 8.0.8, Bridge 13.0.2, Windows-11.