It's funny how different naming schemes "click" (or don't) with different people in different ways. When I first heard the haiku/sonnet/opus it was immediately obvious that they were linking the size of the model to the size of the piece of writing. Same with moon/planet/sun etc. for OpenAI's models.
If Google was going to go with elements, it should have been an absolute no-brainer to link size of of the element to the size of the model eg. Hydrogen/carbon/argon, but no, Google screws up the naming like they _always_ do. Hell, use the noble gases for christ sake. Helium/neon/argon/krypton/xeon would have been great, not perfect mind you, because a lot of people might not remember the ordering of those elements, but at least it would be consistent and make sense.