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Any pattern in a 2 x 2 turns mono dpi into 1/2 colour dpi, i.e. 300 dpi underlying panel giving 150 dpi colour. Those are all variations of the original Bayer idea. The alternative is stripes (3 x 1). That gives same resolution in one direction for colour as underlying display and 1/3 resolution in the other direction.
To do colour on ANY monochrome panel (eink or LCD) using a coloured pattern filter reduces the effective resolution even for mono images. This is basic optics, physic and mathematics, no matter how clever the filter is or what name you give it.
There are more complex schemes using unfiltered pixels that allow brighter monochrome. They further reduce resolution of saturated images but allow slightly higher apparent resolution of pastel images.
It absolutely doesn't matter what pattern or layout or system is used. The only way to get colour on a monochrome panel / display of any kind is a coloured filter pattern or stripes aligned to the pixels. Then the underlying native panel resolution is gone. Certainly some kinds ot mono text or images can still be apparently sharper than saturated coloured ones, but they can't display as high as resolution as the unfiltered panel. It's just total fantasy to claim true 300 dpi mono on a panel that's 300 dpi with a coloured pattern on top. You'd only get the real 300 dpi mono if your scraped the coloured pattern (or striped on the older panels) off.
Bayer is
RG
GB
in a 2 x 2 square of native pixels for each pixel the viewer sees. Or a variation of it, rather than simple stripes as was originally used on sensors and flat panels (3 x1 layout of R G B). Though CRTs used triangles of R G B before using stripes and the cameras used either 3 sensors or stripes.
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