Wheelbuilding / Wheel Building / Wheel build help

I meant this stuff about heads in/out

This seems to be the subject of holy wars. Pray to your god(s) and let your conscience guide you, but in practice it won't make any difference.
The argument for outbound-pulling (as shown in your diagram) is that the spokes which experience the highest dynamic tension have the best supported bends.
The argument for inbound-pulling is that dynamic tension changes from torque transmission in interleaved wheels tend to pull the outermost crossing away from interference with the RD pulley cage or disc brake caliper.