@Jimmyfeellucky
Depends on what you mean by cavalry (definitions in this game are so tricky). Assuming you mean Cavalry/Motorized/Mechanized Division, MWBI is the probably the best as it gives the most specific bonuses. SFD would be next. GBD could work but cavalry are supposed to be fast which does not play to GBD's strengths. MAD obviously isn't a great fit.
Also the speed of a division is based on the slowest battalion, so there is no reason to play cavalry or HARM into an otherwise foot slogger force (both the infantry and artillery have the same speed). Check the division template and you'll see the cavalry and armor
Close...7/2 Inf/HArm or HSpArt is quite a useful template versus Infantryspam in any regards. Especially early on. Good Hardness, good Softattack, good Org, enough Breakthrough, good defense