The WDOG_CS module according to the documentation specifies
CLK 00b – Bus clk
CLK 01b – LPO_CLK
CLK 10b – Internal_CLK
CLK 11b – external_CLK
But at the system level, the clocks for the module are routed as follows:
The internal_clk is routed to SOSC_CLK source; The external_clk is routed to SIRC_CLK source
Therefore, both labels are correct, I apologize for the labeling confusion.
Regards, Luis