Just looking for clarification on the standard/stock and/or ideal/recommended SW in Titleist clubs. I see that the Titleist C16 & 716 AP1 irons are D1 and the 716 AP2, CB, MB, and T-MB are D2. The 816 H1 and H2 are both D2. The 917 D's and F's aren't listed.

Am I correct in assuming that the D1 SW in the C16 and AP1 is lighter due to being a more GI club whereas the others are a bit heavier?

Also, if those are the "standards" for the irons, what are the "standards" for the woods?

Thanks TT!