The schematic looks like being copied from TI evaluation board user guide
https://www.ti.com/lit/ug/sluuax9b/sluuax9b.pdf, curiously with the common mode choke inductance value deleted.
L1 and C1 can be considered as EMI filter elements.
Allthough L1 is a common mode choke, it has some differential inductance and is in so far filtering differential mode interferences in combination with C1. The common mode inductance is acting in combination with line common mode impedance.