𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (10/?): Angels & Demons 𝙰𝚄

Where Alec is an angel and Magnus is a demon. Sometimes heaven commands Alec to chase Magnus for his sins on earth. Other times, Magnus tries to tempt Alec or they just have a forbidden love. Every time they fight against heaven and hell to be together. Possibly they also try to stop the apocalypse. Hallelujah!

Also, this trope could include all the fics where Alec has wings, Magnus is more demonic or inherits Edom.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (9/?): Soulmates/ Soulmarks 𝙰𝚄

Where Alec and Magnus are soulmates and share soulmarks or their marks complement each other. Alec usually hides his mark because he’s embarrassed to be tied up with a downworlder and the same is true for Magnus who is bonded with a shadowhunter. But when they finally meet, they connect and, with a little effort, they could both break their own biases and be happy.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (8/?): Reverse 𝙰𝚄

Where Alec is a warlock and Magnus is a shadowhunter. The character roles are all inverted (shadowhunters are warlocks and vise versa) but storyline follows canon. They conserve their original personalities so Alec is a grumpy hermit and Magnus loves flirting and fashion.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (6/?): 𝙼𝚞𝚗𝚍𝚊𝚗𝚎 / Forsaken 𝙰𝚄

Where Alec is stripped of their marks because he is gay or because he dates Magnus. He left his old life and must learn how to live as a mundane. He usually lives with Magnus who helps him to adapt to his new lifestyle starting a new carreer similar as hunt, related with law and justice or something artistic. They have kids and Alec is completly out and pride.

At the inverse trope Alec is kidnapped or changed as baby and grow up as a mundane but then he develops the sight and learn about shadowhunter’s heredity. He usually knows his family and other downworlders like Magnus.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (5/?): 𝙼𝚊𝚐𝚒𝚌𝚊𝚕 𝙰𝚄

Where Magnus is always a warlock and Alec sometimes is also a warlock raised as a shadowhunter and other times he is half shadowhunter and half warlock. Logically both have magic. Alec not always has angelical powers but frequently he has wings similar as an angel or a demon that could be considered part of his angelical hereditance.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (4/?): 𝙳𝚎𝚝𝚎𝚌𝚝𝚒𝚟𝚎/ 𝙿𝚘𝚕𝚒𝚌𝚎/ 𝙲𝚛𝚒𝚖𝚒𝚗𝚊𝚕 𝙰𝚄

Where Alec is always a cop or a detective and Magnus is sometimes a victim, a suspect or a criminal.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (3/?): 𝙻𝚊𝚠𝚢𝚎𝚛 𝙰𝚄

Where Alec is always a lawyer and Magnus is sometimes a partner worker and others a client or a commercial rival.

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (2/?): 𝙻𝚒𝚋𝚛𝚊𝚛𝚢 𝙰𝚄

Where Alec works at/ has a library and Magnus is a regular client or a new one (he can be model, wiccan, or whatever but when he cross the door he always has Notting Hill vibes).

𝙿𝚘𝚙𝚞𝚕𝚊𝚛 𝙼𝚊𝚕𝚎𝚌 𝙵𝚒𝚌 𝚃𝚛𝚘𝚙𝚎𝚜 (𝟷/?): 𝙲𝚘𝚏𝚏𝚎𝚎 𝚂𝚑𝚘𝚙/ 𝙱𝚊𝚛𝚒𝚜𝚝𝚊 𝙰𝚄

Where Alec works on a coffee shop and Magnus is a regular client or a new one. Sometimes it cross with a College AU (student/profesor!magnus, student!alec) or an Office AU (ceo!magnus).