Here are some examples:

Different types of lattices infill:
ArtisanIllustration_05.jpg
Lattice merge or transition or topological interpolation:
FieldMerge_04.jpg
Conformal Lattice:
Sole_Production_TopView_02.jpg
Free defined primitive domain (e.g. cylindrical domain) lattice generation:
spherical_mesh_part.jpg
External Field based (e.g. stress field based) regional enhancements
SK_original.jpg