The ornamental design for a ladderbaryoke, as shown and described.
FIG. 1 is a perspective view of the ladder bar yoke thereof;
FIG. 2 is a rear view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a right side view thereof, a left side view being a mirror image thereof; and,
FIG. 5 is a top view thereof, a bottom view being a mirror image thereof.
The broken line projection shown in the perspective, rear, right side and top views is included for the purpose of illustrating environment and forms no part of the claimed design.