Most mornings I have two alarms, one to take my medication and drink some water and go back to sleep for 30 minutes. The second is allowed to snooze and it is where I wake up slowly over another 30 minutes by which time the medication has started to kick in. I have tried to just get out of bed when my alarm goes off many many times, it always goes badly - I'm nauseous, uncoordinated, liable to fall over, can barely see and it brings on a headache which lasts hours. It's better for me to have a slower wake up, although I have learnt that snoozing and actually going back to sleep is a terrible thing, that was training me to sleep through alarms. I only realised that once someone pointed out that snoozing repeatedly for an hour gives you terrible sleep for the last hour whereas you could just let yourself have decent uninterrupted sleep for an extra 40 minutes and use the snooze period to do something while being actually awake.
However I don't need the slow wake up as much with my current dose. It seems to retain a residual effect from the day before, not sure if it's helping me get more restful sleep, or just helping reset things but I come to and am alert after a few minutes rather than being an actual zombie/lizard for the first 20 mins and then groggy for a couple of hours after waking up.
I also do much better if I can get up after 8am, which is a perfectly reasonable time, except that schools where we are start around then or 15 minutes earlier.
It is weird how embarrassed and ashamed I feel about trying to explain this issue to people because obviously nobody likes getting up at 6:30am, so it sounds to me like I'm saying I'm the special princess who can feel a pea under 100 mattresses. When in reality getting up at 6:30 for me is more like getting up at 4:30 for most people and I experience similar effects when I do it regularly. I'm sure DS1 does too.
One solution is to actually seek out a job/lifestyle which allows for a consistently later sleep-wake cycle.
I also think a lot of people can power through when they are younger and as they get older they find it harder and harder to manage. So I'm not sure that an example of one random person with ADHD who has never been late for work is helpful. Also not everyone with ADHD has the sleep cycle issue. I don't think DS2 does, he's never had issues with sleep at all.