Image of Blender F-Curve containing key frames with unique left and right tangents and Bezier, constant or linear interpolation types. Resulting curve produced by exporting above F-Curve as CHR0 node ...

SimpleLattice a small blender 2.9 addon to make working with lattices simpler. Basically just select objects/vertices and run>SimpleLattice. This will add a lattice object, creates modifiers and ...