On the MacBook Pro, which color profile is more realistic and life like? Color LCD or SMPTE RP 431-2-2007 DCI (P3)?
Unless you have a colorimeter to make an accurate profile, the best profile is the default profile, which will depend on your exact MBP model.
In System Prefs > Displays > Colour check the box for 'Show profiles for this display only' which will include system defaults plus any custom profiles specifically made for that display.
Which color profile is more realistic and like life?
There is no way to know without calibrating your display. If color accuracy matters, buy a colorimeter. Older models are cheap and better than not calibrating at all.
According to How to Color Calibrate Your Mac’s Display, the default profile is probably Color LCD, but depends on the specific display model.