I thought I was pretty clear on my stance about how they would be similar, as in they would be similar in experience, and general positions. The only thing we would know from the group I listed is what Bam would provide, as we would be simply guessing on anyone else. It's easy to say Davis is better than Bamba, and likely is, but the problem is Bamba hasn't played a full season at UK, and Davis has. So you know what Davis provides, and are simply guessing what Bamba would provide. This is actually just as true with Lamb and Diallo. How do you know Diallo won't shoot it as well as Lamb? Lamb was great in college, but wasn't very good in high school. In fact, that was one of the knocks on Lamb, his 3 point shot, as he was more known for his mid range game. But again, we know what Lamb did at UK, Diallo has yet to play a single game at UK.
As for differences between the 2 line-ups based on what the perception of the new players are, there are many. Green is likely a better shooter and passer than Teague, but not as good at finishing. Diallo is likely a better paint scorer and finisher than Lamb, but not as good of a shooter, while defensively they should be pretty similar. Washington is likely a better shooter and ball handler than MKG, but not likely as good on defense or rebounding. Bam is likely a better post defender and power guy than Jones, but not as smooth with the ball. Bamba is likely as good on the defensive end as Davis, but not near as good on the offensive end, and in the end will likely not be near the overall contributor that Davis was.
Having said that, if Bam returns, Bamba comes, and we somehow get Johnson on board, that will be in and of itself amazing. It would also likely make us a much deeper team than we have been with the exception of 2015.