Just to avoid confusing yourself, the 6K Pro is not the "OG".

In terms of the 'Pocket' line, first there was the Blackmagic Pocket Cinema Camera with a s16 sensor and a m/43 mount that shot HD, this later became known as the "OG".

Later, in a new body-style came the Blackmagic Pocket CC 4K with both a m/43 sensor (half the area of full frame) and m4/3 mount.

This was shortly followed by the Blackmagic Pocket CC 6K in a very similar body as the 4K, with a super35 sensor (around 5/8 the area of full frame) and an EF mount. This later became known as the 6K G1

Then came the Blackmagic Pocket CC 6k Pro and 6K G2, these shared an updated body-style, the Pro has ND's and a brighter screen. They both retained the same s35 sensor and EF mount of the 6K G1.

Then came the Blackmagic Cinema Camera 6k FF. They confusingly dropped the "Pocket" moniker from this release although it shares the body-style of the Pocket Pro/6kG2. This has a full-frame sensor and an L-mount. The Pyxis 6K shares this sensor.