But don’t get too hung-up on them. Anywhere with good circulation and open to the air to diffuse well is a good point.
Personally I find that anything androstenone based (ie TUTH) is best applied nearer the centre of your body (eg neck/throat area), whilst socials can be spread out to the extremities more usefully. Think on how an interaction builds.
A314 can be very effectively divided between centre and extremities - i apply it this way a lot.