Hi to answer the O. P.'s original question Just learn to make your own I think the answer as to why poser merchants do not  has long been answered ..Sales

I am a BLACK(not "African American") America born Citizen who does not subscribe to the Afrocentric political ideology that assumes we all must embrace some cultural Affiliation with African Culture.

I have noticed that the few merchants who do create the occasional non Euro/white Characters typically make Dark skinned
decidedly "African" Looking Characters
sometimes with a steroptypical "African "sounding name and content motif.

As though you only have a choice of Uber Nordic or  Exotic"Nubian".
So waiting for merchants will not always give you what you seek anyways

You never see any medium tone or Light skinned blacks like myself
but Alas I did not complain.

When creating my Self CG clone
I took an Old Mike 2 texture and use the mac System color picker to Sample a photo of my actual face to create the diffuse color and hand painted in my freckles on the face mapin photoshop

I literally stole the green/hazel eyeballs from an old P6 jessie Character Called "bryn for jessie" by former merchant "Shaharra"

So if you truly want a certain look
Do the work yourself

My website

YouTube Channel