In addition to Funko Pop! and Funko Mystery Minis (which can be found on their respective pages), Funko has released several DC Extended Universe products from their smaller toy and collectible lines.
Harley only has more on a technicality, as she has 3 variants for each of 4 collectible cards, adding 12 to her final count.
Wonder Woman has the broadest range of Funko products, appearing in 12 different product lines.
Superman is the only character to appear as a Pop! Plushies character.
Wonder Woman is the only character to appear as a Pint Size Heroes figure.
Harley Quinn and Darkseid are the only characters to appear as a Soda figure.
Joker is the only character to appear as a Funko Pez dispenser.
Aquaman is the only film to feature a collector's box, which also includes the only set of Heroworld figures in the DCEU, the only pen that isn't character-topped, and the only Mystery Minis that aren't part of a randomized set.
Hero Plushies is the only Funko product line to include multiple movies in one set of merchandise (which they did by combining Batman v Superman and Suicide Squad).