Grease must be a fairly recent addition to their lineup. When I purchased my tractor, they had just started labeling their own hydraulic fluid and that was all they offered.
That being said, I use "Texas Red" (I think that is the name) on high speed parts such as PTO shaft universal joints. On loader/hoe pins and similar high pressure parts, I use the Tractor Supply Traveller brand black heavy duty high pressure moly grease.