I don't think you can lump those 3 together like that, though you did qualify it. I don't know anything about dysgraphia, but dyslexia is probably the standout thing in that list that make writing very stressful.
With ADHD, I've always struggled with consistency and memory, and what's been helping for a few months is to start my day by writing it out in detail, so I'm forced to work out the kinks.
I wasn't qualifying categorizing these things, I just gave a list of things that can cause difficulty writing among some who have them. Dysgraphia is a writing-specific neurological disorder.
I meant that you qualified it with "some" which is probably true, but I guess on the ADHD side, there are so many other management issues that would supercede this and be much more impactful. For example, my formerly laidback team lead used to give me the agency to get my work done without much oversight, but now they feel like checking in frequently to get "updates" is a good idea. It's provoking me to procrastinate and avoid being near my keyboard, and will probably push me to look for a new job.
With ADHD, I've always struggled with consistency and memory, and what's been helping for a few months is to start my day by writing it out in detail, so I'm forced to work out the kinks.