Hello @AleSanders,
According to the KW38 Reference Manual (KW39/38/37product page, Documentation section), this device has 5 pure single end input channels, plus either one single end input channel (DP) or a pair of differential input channel (DP/DM).
For more details about ADC Channel Assignment, please take a look at the KW38 Reference Manual, Section 4.8.2.3.1 ADC0 Channel Assignment.
Regards,
Eduardo.