More examples being
Vines fading in from top to bottom
Cactus fading bottom to top
Carrots, potatoes, beetroot, or wheat fading into the next blockstate from the center outwards
Weeping vines, bamboo, and stuff that changes when the block grows another level could also have the source block fade first before the 2nd one is faded in
So it would look like the stem grows into its 2nd blockstate and grows into another block when in reality itās just 2 animations (if this is possible)
Trees are also a possibility but it would be difficult but imagine the logs fading upwards then when it reaches the top log the leaves expand from the tree and fade in with a sort of jiggly/bouncy animation however I doubt it
Cocoa beans might look a little cursed with the animation ngl but if it were to grow from the stem then the bean top to bottom then it might not look cursed?
Let me know if I missed anything š
Also keep in mind all of these would be optional and configurable so not every one of these features would be enabled if you were to enable growth animations if it gets added