KnitKing is just another brand name for Japanese knitting machines manufactured by Brother Co.
Below is the list of models I’ve seen branded as KnitKing. If you do not see a machine model number you are interested in, check out the Brother Knitting Machines page as the model numbers are often interchangeable.
Simple Seven, mid-gauge, plastic bed, basic/manual
KnitKing KH830, standard-gauge, punchcards
KnitKing KH881, standard-gauge, punchcards, built-in knit leader
KnitKing KH891, standard-gauge, punchcards, built-in knit leader
KnitKing KK91, standard-gauge, punchcards, built-in knit leader
KnitKing KK93, standard-gauge, punchcards, built-in knit leader
KnitKing KK98, standard-gauge, punchcards, built-in knit leader
KnitKing CompuKnit ST, standard-gauge, electronic
KnitKing CompuKnit II, standard-gauge, electronic
KnitKing CompuKnit III, standard-gauge, electronic
KnitKing CompuKnit IV, standard-gauge, electronic
KnitKing CompuKnit V, standard-gauge, electronic
KnitKing CompuKnit Vcx, standard-gauge, electronic
KnitKing KH230, bulky, basic/manual
KnitKing KH260, bulky, punchcards
KnitKing PC bulky, punchcards
KnitKing Compuknit bulky, electronic
KnitKing Knittax AM3, double bed