Best? No. Any tomato will work fine and a mix of different tomatoes is even better. San Marzano is one often recommended. Linked several previous discussions on this question below if you want to scan through them.

Dave

Here is a link that might be useful: Sauce discussions

Since you're in Arkansas? You will want to get a variety that can take the intense summer heat. Tomatoes do not really like hot hot weather. They are actually native to a sort of foggy region up in the South American Andes where it is usually warm, but not hot.
Paste tomatoes are by far the best for you.
Find out which Paste tomatoes are well adapted by contacting your local County Extension office.
Your climate is far different from my own.

Here is a link that might be useful: late tomatoes