What's the gap between him Lambert Yurov and Kemell?
For the sake of Yurov let's ignore the Russian factor and current events.
He's intriguing tbh
Formenton-Stutzle-Lekkerimaki
Has the markings of an interesting second line.
I'd have those players ranked as follows: Yurov (5th overall for me if we follow your rules), Kemmell (7th overall), Lekkerimaki (11th overall), and finally Lambert (22th).
Yurov and Kemmell are pretty much on the same tier as prospects to me, with Lekkerimaki a small but noticeable notch behind as I don't think some of his tools are as good as those of the others. However, Lambert is several steps behind as a prospect compared to the other three.
I like Lambert's game defensively, I really like his effort level, and he has great speed as well as astounding energy/cardio given that there is very little to no drop in his play quality despite the incredible distances he crosses on the ice at high-speed each shift. Then you add in the fact that Lambert has good moves and footwork handling the puck, will go dig out pucks in the corner without problem, is no slouch on the strength department despite the need to bulk up quite a bit (same old same old for prospects), receives passes really well even with awkward placement, drives puck-possession like an absolute champ, is exceedingly good in transition, shoots well, has a nice sense of touch/timing on his passes, and owns a pretty sweet release when he shoots.
Seriously, with such incredible hockey attributes you'd think Lambert would have virtually all the makings of a perennial all-star at the NHL level and be a favorite for first-overall pick in this year's draft.
But then you start the evaluation on Lambert's hockey sense and things go south pretty quickly.
I'll say it straight out; I absolutely hate Lambert's hockey sense. It makes Broberg's in his draft year look very advanced (!). Despite having sweets mitts Lambert doesn't have the hockey smarts / hasn't learned how to create anything individually against tighter checking, often defaulting the puck back to teammates, putting them in awkward positions on the ice at times. His offensive play selection is woefully lacking as far as decision-making speed goes, but worst of all is his vision and anticipation, as Lambert very often misses or overlooks the "optimal" play to make, often opting for telegraphed back passes that seem to get picked-off every damn time and becomes a turnover.
One of the only things I do like about Lambert's reads offensively is that he is pretty aware of board passes and plays by defenders and will stifle the breakout really well as a forward along the boards, maintaining possession.
If not for Lambert's potential as a bottom-6 NHLer and the small but unlikely chance that he sorts out his IQ problems he wouldn't even be a first-round pick for me, but that potential is there and so he stays at 22 for me right now.
So yeah, I would draft Lekkerimaki 10/10 times ahead of Lambert at this point in time. Lekkerimaki just seems more likely to put it all together at the NHL level.