Red oak is the favorite, but we burn anything that is wood from a fallen tree. Pecan and hickory are good. Surprisingly we have an elm that burns real hot but is hell to split. My brother has a hydraulic splitter that can handle it. Splits hard the whole way.
I try to cut fallen or nuisance trees if possible. Even sweet gum.
Patriotism (and religion) is the last refuge of a scoundrel. Jesus: "Take heed that no man deceive you." Hebrew Roots Judaizer