I would like to compile a list of characters where you can draw two lines in a + shape, running through the center of the character to cleanly separate it into four "components." Some leeway must be given when writing them.
For example, 疑, 殺, and 豔 fit my criteria. For 疑, I wouldn't call ヒ or マ Chinese real Chinese characters, but they are Japanese katakana so they must be related (maybe historically) to Chinese. So the character qualifies to me. I only studied traditional characters so there could be even more simplified ones.
I'm not even sure if there's a term for this type of character geometry. There might be a workbook somewhere that has collected such characters.