So there are 4 athletic defensive forwards with dodgy offensive games = Julian Philips, Rayan Rupert, Jordan Walsh and Sidy Cissoko.
Those four guys all look pretty similar to me.
Philips has a strong FT% which can be a good predictor of future shooting improvement so he looks the best of the bunch. Rupert is more of an unknown as a foreigner. Hard to peg his standing in this group. Cissoko has some passing chops but worse shooting. Walsh more limited offensively.
All look like interesting candidates for a low 2nd round pick. A defensive stopper on the wing but needing growth on offense.
I like Julian Phillips because he could shoot in high school but for whatever reason lost his form in college. He also apparently was in a bad system in Tennessee. As you mentioned, his strong FT shooting does portend a better future as far as long range shooting goes.
Field of '68 did a video on him and one of the hosts compared him to Corey Brewer as a floor. That's not bad for the 2nd round. Also, his parents were in the armed forces and if you watch his interviews he's one of those kids that refers to everyone as "sir." Sure it's a cliche but you have to imagine he probably has a strong work ethic and is more disciplined than your average kid due to his upbringing.
As far as his measurables go, he has an impressive height of 6'6.75'' w/o shoes. His standing reach is oddly short at 8'6'', which is more in line with someone a few inches shorter, but his wingspan is a solid 6'11.5''. His hands are on the smaller side though, at 8'5'' length and 9'0'' width (still wider than Jaylen though!).
He's not really aggressive with his shot so you could imagine him being the right unselfish mentality for a 3 and D role and then expanding his skills later. That's the problem with taking a GG Jackson type. He has more offensive potential but unless he becomes a star level guy, I'd rather have somebody fine with being a role player for now.