Overall, what I am trying to say is that like what was said before, not all the founders of the organizations in the NPHC started each organizations' traditions of handsigns, calls, and symbols. Some were started many many years after the founding of the organization. Within the Divine 9 or the Elite 8 at the time, one organization started to display something to the public first. Another organization looked at that organization and must of said, I love how they are displaying their unity. We should do something like that for our organization.
Or I could be wrong (which is possible

) and an agenda item could of came up at a meeting of the NPHC and they talked about what each organization could do to show unity within the council. Then as a whole, all organizations came up with these ideas. If these traditions were not created by the NPHC, then I believe someone was copying off of someone else at one point.
I have been to step shows for latino, asian, and multicultural orgs and they gave a brief history of stepping and honored the NPHC. All MG orgs that I have been around have a very high regard for NPHC orgs and give them much respect for creating such a strong council. MG orgs are young compared to the IFC/Panhel/NPHC. It might take more years for them to develop their own signature traditions. Who knows what may happen 50 years from now. NPHC orgs might start saluting...