My list goes like this:
1. Gretzky. Undisputable #1 to me. Prime for prime (or peak for peak) Orr can take a stab at him maybe (I still probably have Gretzky #1 there) - but even if, he beats him in the long run
2. Orr. Insane prime/peak consistency.
3. Lemieux. I still think Lemieux was simply better than Howe, and so I place him above. He has a longer career than Orr, but the "intermittance" doesn't help his greatness. I'd have loved to see Lemieux healthy at his best for ~5-6 years, even if it took away from longevity as it does with Orr. It would probably raise his stock.
4. Howe. I won't argue too much with those who rank him higher, but he's #4 for me
5. Crosby. Best resume outside of the big 4. He has it all - including absolutely incredible elite consistency. Careers are peaks and valleys...but he doesn't really have valleys. He had some years injured, but never a bad year. His worst year is better than anyone else's worst year 19 years in. Great playoffs, peak, etc - very full and strong resume
6. Roy. I'm very big on playoffs - and the 3 smythes are important, but also the incredible success/consistency in playoffs his whole career, even outside of those 3 smythes.
7. Beliveau. Incredibly full career, similar to Crosby in some ways, but Crosby was simply better/more consistent
8. Jagr. Insane peak/prime and very strong longevity on top of it. Very strong individual playoff performer too, even if he doesn't exactly have a "smythe worthy run".
9-11 Bourque/Hasek/Ovechkin in some order - I don't know which order. I fluctuate. Today I'm feeling Hasek/Ovi/Bourque, but I shift.
As for your condition of "must include"....well no. Because they don't make my top 10 if so, sorry.