This is fandoms where there isn't too many characters to make their own post! Might make a part 2 if I remember any more!

Scooby Doo's sexualities and genders!
Fred: Bisexual, either demisexual or demiromatic and male
Daphne: Bisexual, either demisexual or demiromatic and female
Shaggy: Bisexual, demisexual and either male or non binary
Velma: Bisexual, demiromatic and female
Marcie: Lesbian, demiromatic, demisexual and female

Mr Peabody and Sherman's sexualities and genders!
Mr Peabody: Asexual, aromatic and male
Sherman: Bisexual, maybe demisexual and male
Penny: Straight, either demiromatic or demisexual and female

Mr Peabody and Sherman's ships!
Sherman x Penny

Scooby Doo's ships!
Fred x Shaggy x Velma x Daphne
Marcie x Velma