Periodic Table of the Keys
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ArtHumorScienceTechnology

Being a Modest Proposal as to a Tabular Arrangement of the Key Board employing a Natural Classification.
Left to right, top to bottom: The Functionals, The Numericals, The Alphabeticals, The Modals, The Editorials I, The Editorials II, and The Punctuationals. Of course there’s still more to be discovered.
Somewhat related: varieties of Periodic Tables, my favorites are (of course) the Longman & Stewart models.
LINK [Periodic Tables]