This is where your Wright's Coefficient pedigree study would help. Sadly no one knows for sure how Red Boy was bred so throws the study off. If one wishes to go with what is shown.

In a 13 generation study the Termite dog hits the key dog Tudor's Dibo 171 times. Waccamaw's Big John in a 13 generation hits the key dog Colby's Dime 163 times. Tant's Yellow dog in the 13 generation hits the key dog Colby's Rifle 80 times.

So Tant and Waccamaw dogs are more similar bred dogs.

Termite is a little less similar due to more Dibo breeding from the Hank dog and Lonzo dogs. Powell bred more to the Hank side of the line with added Lonzo blood from Chavis Black Beauty and the other two dogs appear to carry more Red Boy.

In the end to me, they all look similar to the older big Jim Williams type dogs which carried a lot of Colby-Red Nose Lightner.