Common Mode Noise on Differential Lines Driven Against Chassis GND
I've never seen multiple common mode chokes used as you describe.

The systems I've been involved with have normally used a double common mode choke with one in each of P and N (none in the ground). This would be used for USB or similar signals (e.g. MIPI-CSI)

In some cases a triple common mode choke with three windings on the same core was used. That was in a cell-phone. I can't currently find a reference to it. I wasn't the EMC engineer so I don't have any details.