21 cards where the card types include “knight” and the card types include “zombie” and the color identity ≤ BW

Midnight Reaper (Ravnica Remastered #86)
Murderous Rider // Swift End (March of the Machine Commander #258)
Corpse Knight (March of the Machine Commander #321)
Liliana's Standard Bearer (March of the Machine Commander #255)
Josu Vess, Lich Knight (March of the Machine Commander #253)
Foulmire Knight // Profane Insight (March of the Machine Commander #249)
Haakon, Stromgald Scourge (March of the Machine Commander #252)
Phyrexian Crusader (Mirrodin Besieged #50)
Fell Horseman // Deathly Ride (Wilds of Eldraine #92)
Order of Yawgmoth (Duel Decks: Phyrexia vs. the Coalition #11)
Eastern Paladin (Eighth Edition #131)
Western Paladin (Eighth Edition #173)
Stillmoon Cavalier (Eventide #95)
Stromgald Crusader (Coldsnap #71)
Marauding Knight (Invasion #110)
Cadaverous Knight (Planechase #20)
Sanguine Guard (Duel Decks: Phyrexia vs. the Coalition #9)
Headless Horseman (Legends #102)
Tresserhorn Skyknight (Coldsnap #73)
Skulking Knight (Time Spiral #130)
Vladimir and Godfrey (Alchemy Horizons: Baldur's Gate #32)

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