Kentucky has no specific rules on sole proprietorships.
Assuming the individual is using an assumed name:
"John Buford, DBA Mega Mechanical;" the name of the individual should be first in the account title to facilitate IRS name/TIN matching.
The correct TIN for the account is John's SSN.
Please do not post the same question in more than one forum.
In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.