Understand that we are addressing a Traditional as the OP has listed. Support materials would be slightly different when addressing an In-Line.
My short ball starter is and older Butler Creek. It has a built in bore guide, steel shaft and brass cup or end as well as wooden ball. I do not know if you can buy these anymore.
On Jags and other stuff you mentioned. most are made by the same manucfacture anyway. CVA is a good source but you certainly can buy these from countless sources.
I own two Range-Rods and these were purchased from TC. Try Traditions on a Range-Rod. Stay away from an all Fier glass rod,
Precision powder measure; Get the higher end TC, preferably, all brass.
By the way, add a brass bore guide to your list ....
Be Safe !!!