The magic used by the Masters of the Mystic Arts is very distinctive in as much as it uses particular Tao Mandala to defend and contain spells. That does not however mean that all Scorcerers in the MCU use mandala.
Of the other spell users we’ve seen Loki, Hela and Ghost Rider* (AoSHEILD) they do not use Mandala, The known witches including Wanda, Agnes, Agnes’ Mother/Coven, Thors mother, Morgana Le Fay and Tina and Nico Minoru also do not use Mandala.
That just tells us we dont have enough data to identify exactly what a Scorcerer is in the MCU