I love how rich people in particular love proposing that people have more kids while simultaneously ignoring that people can't afford to have kids.
I can tell you many couples with 2, 1 or even no kids that would have 3, 5 instead if that was something vaguely realistic financially speaking.
Of course you can always compromise and say "I'll have 3 kids but they won't have the chance to go to university, etc." which morally... Sucks. The world is complicated enough to bring someone into it without giving them good chances at succeeding.
My fiancé has combined type nominally, but other than racing thoughts and some stimming, he's definitely the quiet type. I would say that's probably the case for many (most even?) AuDHD people, as autism doesn't usually go hand in hand with the endless social battery that the ADHD stereotype portrays.