Whoopsie! Forgot to update this.
Names are a little on the arbitrary side, not so much elemental. I could probably continue developing along this form (I just ran out of colours so I took it as a sign ok, 9 is a good number). I'm thinking they'd have different sort of material qualities; metallic (steel, thunder, charred, hollow), crystalline (water), energy-like (cosmic, pure).
In other news, I am not the deft and efficient 3D modeller I would like to be. Thing is I make all sorts of trouble for myself by not thinking the transitions out on these things so they don't always prove viable. Also a more CAD-like approach to modelling is likely more efficient for these. 3D in progress: [link]
Their dagger littlebros were done a bit quickly, thought it'd make a good offhand weapon... even if they are not all very stabby. Rule of Cool > Viability.