Actually, <p style="text-align:justify">Actually, it was Uman from Tibia Royal who got this right for this question! I asked there on a news and he answered me with an official answer made by CM Mirade some time ago. I will post here a simplified list that I retrieved from https://www.tibiaroyal.com/en/blog/431/colours-of-magic/
As Tibia Royal https://www.tibiaroyal.com/en/blog/431/colours-of-magic/</p><p style="text-align:justify"><strong>Official reply from Mirade with the list revealed (18/03/2019): https://www.tibia.com/forum/?action=thread&postid=38631696#post38631696</strong></p><p style="text-align:justify"><br>As we had presumed wrongly earlier @Trululu Gumdrops, Demons or Fire Devils aren't present here, although we can call them spellcasters. Here is the full list available so far:</p><p style="text-align:justify"><strong> Chakoya Windcaller
Windcaller<br> Dworc Voodoomaster
Voodoomaster<br> Barbarian Brutetamer <br> Dark Apprentice <br> Orc Shaman Witch
<br> Witch <br> Merlkin <br> Minotaur Mage
Mage<br> Elf Arcanist <br> Dark Magician <br> Lizard Snakecharmer <br> Blue Djinn <br> Green Djinn <br> Dwarf Geomancer <br> Elder Bonelord <br> Efreet <br> Marid <br> Priestess <br> Ice Witch <br> Necromancer Quara Hydromancer
<br> Quara Hydromancer <br> Quara Hydromancer Scout <br> Braindeath <br> Deepling Spellsinger <br> Lizard Dragon Priest <br> Mad Mage <br> Lizard Magistratus <br> Diabolic Imp <br> Raging Mage <br> Infernalist <br> Warlock Not </strong><br><br>Not really a bad list of choices if you ask meme</p>