[ChrisMarshallNY]

I don't remember the manufacturer (may have been Fuji[0]), but someone made a camera sensor that was laid out around a 45-degree angle.

[0] https://en.wikipedia.org/wiki/Super_CCD

[IAmBroom]

There's also a hex-pattern camera sensor out there. It claimed to have better resolution without increased chip-printing cost (N pixels/area produced better effective visual resolution), but never took off.