How to interpret UL listing for NM Clamps stating diameter?
I would not interpret the catalog page that way.

APPLICATION: Used to connect non-metallic sheathed cable to a steel outlet box or othermetal enclosure. Dry location.
Fits NM cable, flex cords, multi-flex cords; fitting range .835 - 1.520” diameter or SE cable 2 conductor 4/0

That connector is made for a single cable.  There are small connectors that can be used to secure one or two 14-2 or 12-2 cables, and some specialty connectors that are made for more small cables, but these larger clamps are for a single large cable.