I can see why someone would think there was Terrier, but I'm not so sure about Basenji. (The only way to know for sure is to do a DNA test.) Both of your dogs look very similar. What breed, or mix, is the older one?
You had me confused and then I realized you meant the write up on the other rescue (Okapi)…
I like less white also. So I had to go look... wow, coloring reminds me of minpins. :) Cute dog though.
No idea, sometimes with mixes it's so hard to tell what the parentage is. I do think that your dog's head is a bit more refined than many of the pit mixes i've seen.