Diagrammatic Pieces define the pieces moves on the item itself. This removes the need to memorize the moveset to the symbol needed in many forms of chess

Western Chess - Maple Landmark

Wooden Pieces with the moves written on the bottom (so you have to lift them up to see)

Maple Landmark Image

Japanese Chess - Dobutsu Shogi (in the greenwood)

https://en.wikipedia.org/wiki/Dōbutsu_shōgi

Cute animals with the moves indicated by dots around the edge of the piece, probably the best diagrammatic set I’ve seen

Dobutsu shogi image

Japanese Chess - Kumon Study Shogi set

Very similiar to dobutsu shogi, but with the original character written in the middle instead of a cute animal. The wood feels good in the hand

Study Shogi image

Eastern chess sets will often have “westernized” pieces, that are different non-language characters symbols, but still require people to memorize a symbol lookup table.

I’d love to find diagrammatic options for Chinese Chess (XongQi), but I haven’t seen any - do you know of options?