Neon and Argon: Seem okay. They're really quite similar though. It's like the designers couldn't decide which they liked more and so just decided to release both.

Xenon: It feels alright. The horizontal serifs give everything a more uniform look, but you can also get that with any other serif font.

Radon: Uh, no thanks. It's like someone took the weird letters from Dank Mono and said "what if we did that but for the whole font?"

Krypton: What if we just took OCR A and added ligatures? Alternatively, "Floating Point Precision Error: The Font"

Overall, none of these are compelling enough to make me want to try them. I quite like the Texture Healing feature, but it's not enough to make me want to move to it.

Also, using multiple different fonts in one code file sounds horrendous.