AinTransitions for After Effects - Pack Preview

Preview of Splits Transitions for After Effects

Only two directions are shown for each subcategory in order to have an overall view
Gifs may not seem so dynamic, because a delay has been added between transitions so that you can clearly see the transition
In the AinTransitions extension for After Effects, you can choose any desired transition speed

3 Blocks

3 Strips

Grid 4

Grid 8

Grid 4 D

Slice