Canon: the 5DII (THE popular full frame digital spec), 7D (first consumer grade fast shooter)
Nikon: D800E (significant step up in IQ), D500 (strong dynamic shooter)
Pentax: K5 (CMOS dynamic range) and 645D, Z (first affordable MF).
Ricoh Theta 360
Fuji XT1 (mirrorless with good decent on sensor PDAF)
Sony A7III (mirrorless FF with decent on sensor PDAF)
Everything else was a "me too" product with or without improvement.
---------- Post added 23-12-19 at 14:52 ----------
Originally posted by kiwi_jono TBH, I'm surprised DPR included the K-1, given that they are not exactly Pentax fans.
They aren't fan of nothing, they help develop the camera sales of amazon via content marketing and direct links to amazon product pages.