I think futafan is the only one with video content.
I own
Dickgirls 3d which has all exclusive 3d futanari toons created in house but only in pictures.
Other possible futa sites you can check but I think either only have pictures or no vhgs.
Exotic Gold
Hentai Biz
REd Square Cash
VipPay
SexTronic
Hentai Boss
serious-coin