I don't have specific experience with either school, but see these links: https://tamuoar.custhelp.com/app/ans...LThrNXpCNmw%3D
UT, is that Texas University? Types of Applicants | Be a Longhorn
Scroll down to "Home-schooled student"
As long as you provide the requested information, it should be no different for you coming from a homeschool than it would be for any other student. You have a unique background. Use that to your advantage. Don't be afraid to contact an admissions counselor and ask what you can do to make yourself stand out. Will they accept more information, i.e., if they don't require course descriptions, it is worthwhile for you to provide that anyway?
Hopefully someone here will have more specific info; you also might ask on the Texas A&M and UT boards.
And GOOD LUCK!!