By shallower, my question encompasses several "interpretations", I mean angle of attack and swing plane if that makes sense.
And vice-versa for steep?
More penetrating is a bad choice of words, more distance with less effort is the gist I was going for.
That does make sense. I would assume though that a steeper AOA with the same lofted club decreasing the dynamic loft would produce a bit less spin though? Maybe it is negligible over a few degrees.
If all else is equal (ball type, clubhead speed, contact location, etc.), spin loft* is proportional to spin. More spin loft*, more spin.
* For spin lots of ~ 45° or less.