In addition to Fletcher, other experts have identified multiple forms of adultism, offering a typology that includes internalized adultism, institutionalized adultism, cultural adultism, and other forms.
Pored Flečera, i drugi eksperti su naveli više oblika adultizma, nudeći tipologiju koja uključuje internalizovani adultizam, institucionalizovani adultizam, kulturni adultizam i druge oblike.