A golf club head comprising: a wood type golf club head body including a ball striking face portion at a front side thereof, a rear end side opposite the front side, a top portion, and a sole portion; the golf club head body including: a maximum breadth that extends from a forwardmost point of the ball striking face portion to a rearwardmost point of the rear side; a maximum depth that extends from a topmost point of the top portion to a bottommost point of the sole portion; a first portion of the golf club head body that extends from the top portion to the sole portion and includes a first depth of the golf club head body; a second portion of the golf club head body that extends from the top portion to the sole portion and includes a second depth that is less than the first depth; wherein the sole portion of the golf club head body is configured so that it includes: a sloped boundary portion that separates a sole region of the first portion from a sole region of the second portion, wherein the sloped boundary portion has a height of at least 2 mm and extends from the sole region of the first portion to the sole region of the second portion, thereby defining a transition in depth between the first portion and the second portion of the golf club head body; further wherein the sloped boundary portion extends across the sole portion from a point at or proximate to a heel edge of the club head body that is at least 70% of the maximum breadth of the golf club head body away from the forwardmost point of the ball striking face portion to a point at or proximate to a toe edge of the club head body that is at least 70% of the maximum breadth of the golf club head body away from the rearwardmost point of the rear side; and further wherein the first portion and second portion are configured so that a center of gravity of the golf club head body is positioned nearer to the heel edge than the toe edge. a wood type golf club head body including a ball striking face portion at a front side thereof, a rear end side opposite the front side, a top portion, and a sole portion; the golf club head body including: a maximum breadth that extends from a forwardmost point of the ball striking face portion to a rearwardmost point of the rear side; a maximum depth that extends from a topmost point of the top portion to a bottommost point of the sole portion; a first portion of the golf club head body that extends from the top portion to the sole portion and includes a first depth of the golf club head body; a second portion of the golf club head body that extends from the top portion to the sole portion and includes a second depth that is less than the first depth; a maximum breadth that extends from a forwardmost point of the ball striking face portion to a rearwardmost point of the rear side; a maximum depth that extends from a topmost point of the top portion to a bottommost point of the sole portion; a first portion of the golf club head body that extends from the top portion to the sole portion and includes a first depth of the golf club head body; a second portion of the golf club head body that extends from the top portion to the sole portion and includes a second depth that is less than the first depth; wherein the sole portion of the golf club head body is configured so that it includes: a sloped boundary portion that separates a sole region of the first portion from a sole region of the second portion, wherein the sloped boundary portion has a height of at least 2 mm and extends from the sole region of the first portion to the sole region of the second portion, thereby defining a transition in depth between the first portion and the second portion of the golf club head body; further wherein the sloped boundary portion extends across the sole portion from a point at or proximate to a heel edge of the club head body that is at least 70% of the maximum breadth of the golf club head body away from the forwardmost point of the ball striking face portion to a point at or proximate to a toe edge of the club head body that is at least 70% of the maximum breadth of the golf club head body away from the rearwardmost point of the rear side; and further wherein the first portion and second portion are configured so that a center of gravity of the golf club head body is positioned nearer to the heel edge than the toe edge. a sloped boundary portion that separates a sole region of the first portion from a sole region of the second portion, wherein the sloped boundary portion has a height of at least 2 mm and extends from the sole region of the first portion to the sole region of the second portion, thereby defining a transition in depth between the first portion and the second portion of the golf club head body; further wherein the sloped boundary portion extends across the sole portion from a point at or proximate to a heel edge of the club head body that is at least 70% of the maximum breadth of the golf club head body away from the forwardmost point of the ball striking face portion to a point at or proximate to a toe edge of the club head body that is at least 70% of the maximum breadth of the golf club head body away from the rearwardmost point of the rear side; and further wherein the first portion and second portion are configured so that a center of gravity of the golf club head body is positioned nearer to the heel edge than the toe edge.