I think there is good deal of separation between #1 (Fultz) and the rest of the draft but little separation between #2 and #7 (Jackson, Isaac, Fox, Patton, Tatum). Then a couple of others (DSJ, Ball, Ntlinika). Then a big drop off again.
I like Fultz the most at the top because he is the most well rounded and certain prospect in the draft. I liken him to a combo guard version of Paul Pierce. Not a physical freak like LeBron or McGrady but still a plus athlete and with a terrific skill-level.
The next group of players has a wider range of possibilities between their floors and ceilings which is why I view there being a big separation between #1 and #2.
Josh Jackson is the most gifted of the bunch. Elite athleticism. Top defense. Plus rebounding. But only a basic offensive game. How that offensive game develops could be the difference between him being anywhere from a starter level SF to the best player in this draft. He has a higher ceiling than Fultz but that is a best case scenario.
Fox is my next best prospect. I love his explosive quickness. Best PG in the draft. He'll be able to get into the paint at will in the NBA. Plays strong defense. Can pass. Can score a big. Dodgy jump-shot. How dodgy that jump-shot is will define his future. Anywhere from Elfrid Payton level PG to a John Wall level PG.
Isaac is next on my list. I likened him to Cliff Robinson. That is who Isaac reminds me of. It's his defensive game. The versatility to defend 3 (SF, SG, PF) or maybe even 4 or 5 positions. Elite defensive potential with elite versatility. His athleticism with that size and length makes him a tough matchup at combo forward. Bigger than most SFs. Quicker than most PFs. Capable of creating mismatches against most teams in the league. Average shot-creation and limited playmaking limit his offensive potential which is why he is not higher on my list.
I like Patton a lot. He is still growing into his body. Learning how to be a big man. His size and athleticism are rare. He has a good skill-level for a young big. A comfort on the ball in both the low post and high post. Two way potential. A few years away from contributing. But high potential and looks like he has his head glued on straight (unlike JaVale McGee) and works hard. He is a guy I'd bet on.
Then there is Tatum. I like his game more if this was 15-20 years ago. He'd be a top 3 pick no doubt. In today's league, I think Tatum is more in the 4-7 range. I'd have him at the back end of this second tier because I like how the other candidates fit into today's league more than I do Tatum. Super mid-post and mid-range scorer. Good size and athleticism. Capable of defending and rebounding his position. Okay passing and handles. Better version of Jabari Parker.
3rd tier ....
Dennis Smith Jr similar to Brandon Jennings. Lots of raw talent. Lots of flaws. Career could end up going in lots of ways. Highest potential left on the board.
Lonzo Ball. Cannot drive well enough to play PG in the NBA. He will be a two guard. Should be a solid offensive player due to his passing and shooting. Lacks explosive quickness. Dodgy defense. Good rebounding. Typical great college player okay NBA player.
Ntilinka is a lot like Smart. A tough defensive minded combo guard. Great size, good athleticism. Lacks explosiveness. Hurts his PG value. More of a two guard or setup PG than a playmaking PG. Cannot get into the paint frequently enough. Has a better jump-shot than Smart.