Part 91 PIC = Sole minipulator if you are typed.

Part 1 PIC(FedEx, UPS, SWA 1000hrs. PIC) = Signed for the Aircraft. Name listed per leg on Flight Plan IFR/VFR. Or Aircraft maintanance log if required VFR/IFR. Can still be logged PIC for sole manipulator but Does Not count towards these purposes.

Part 135, 125, 121 PIC = Required for dispatch release signature. Cannot log sole manipulator PIC under these Regs.