For me:

Power metal or speed metal to start the day or complete a task really quickly

Death metal or epic heavy metal to push myself through tasks

Black metal to go through the day on a sustainable pace

Death-doom when I’m going through a lot of very small, context-shifting tasks for a long time and it’s driving me crazy

Atmospheric black metal or dungeon synth to focus on a complex problem, and also when I’m on latter part of the day and really tired.

Death-thrash to wake myself up when I’m sleepy.