I have a couple things when it comes to those LHD from the top half of the 1st round.
-Is their skating at an elite level?
-Is their hockey IQ at high to elite level?
-Do they have good vision offensively?
-Do they use their size and reach to their advantage?
-If they lack some size do they make up for it with positioning and smarts?
If the answer to all these is "yes", that's my guy. JMO on what should be valued most.
I'd say yes to Sergachev and Juolevi. Clague and Bean are good but I'm not sure they do things quite on the same level at least not at this point. Though that is just my opinion. I could be biased as I've seen a lot more of Clague and Bean so I can pick out their shortcomings.