Task list and ToDo lists are absolutely a great idea for people with ADHD, I've got like 40 different sticky notes on my computers desktop, (I use a program called stickies)
All with ToDo and tasks related to a bunch of different projects like 3D modelling work to do on my VTuber avatar, Household tasks that need doing. you name it, it's there.
I also make sure to break larger subjects down into more bite sized tasks that are easier to complete. That quick feedback and the look of things getting checked off is a great motivator.
Yeah, I have a white board on the door to my office/workshop so I have all my stuff there that stares me in the face when I am pacing around, lol. Another issue is remembering to update the list, lol.