The objectively superior kebab-case of course :)

iNVERSEcAMELcASE of course.

Casing is so last century. The future is CnOaNmCiUnRgRENT.

Unironically, letter casing was a mistake and it should not exist in any language.

That's known as crazy case.

or basket case

Avoid casing entirely and use single letter function and variable names

Case insensitive, of course

CAmelCAse (not to be confused with DromedaryCase, which has one hump).