Found another skip in groovy grapplin. You can double jump and grapple the target in the back left from spawn. Then swing across and swing on the first of the 2 swings. if you build up speed you can let go then double jump to the end. saves ~20secs. If lined up correctly you can yolo the final swing, I’ve gotten a time of 20secs which is ~6secs faster than building up speed.

In blue beyond in the first area with the timer puzzle you can do another wall jump like in the great outdoors to get to the teleporter saves ~8-10secs

Credit to RamenKidd. Posting here to keep everything in one place. Saves ~2-4secs but can be a little awkward.

In the great outdoors you can skip hitting the far right button that activates the first pillar. If you time it right (easiest using a controller and keyboard together) you can just about jump from the un-raised first pillar to the second and continue with the skip from there.