Are you Schaeffer 238 Grease for the pins but not sure what I should use for the slew bearing or if red grease would be just fine
Why no Moly ? It's the standard for EP on steel parts.
It's not generally advised to use a moly grease on rolling element bearings, especially large ones such as excavator swing bearings. The reduced friction from using a moly lubricant can cause balls/rollers to skid rather than rolling as they are designed to. In answer to the OP a good quality EP2 non-moly equivalent from your usual lubricant supplier would most likely work just fine in that application.