I decided to look into this a little after seeing your first comment.
I didn't mess around with the formula 247sports uses for their Team Talent Composite rankings, but I took the average 247 composite rating of every scholarship player on both our 2018 team and 2019 team, except for CJ Saunders and Kevin Woidke (both walk-ons and weren't ranked on 247, and Woidke just earned his scholarship in spring practice).
Not much of a difference, but here are a few observations:
1) Average Player Composite Ratings by Class for both the 2018 team and 2019 team
2018 TEAM - 0.9299 Overall (85 players): 2019 TEAM - 0.9243 Overall (84 players):
2014 Class - .9184 (7 players)
2015 Class - .8985 (13 players) 2015 Class - .8823 (10 players)
2016 Class- .9467 (18 players) 2016 Class - .9179 (12 players)
2017 Class - .9589 (20 players) 2017 Class - .9426 (18 players)
2018 Class - .9429 (27 players) 2018 Class - .9398 (24 players)
2019 Class + Transfers -.9140 (20 players)
2) Your hunch about the 2019 being a little more top-heavy holds some truth to it, at least in terms of 247 Composite Rankings
2018 Team Averages: 2019 Team Averages:
Top 10 Ranked Players - 0.9917 Top 10 Ranked Players - 0.9931
Top 25 Ranked Players - 0.9817 Top 25 Ranked Players - 0.9841
Bottom 25 Ranked Players - 0.8646 Bottom 25 Ranked Players - 0.8575
3) Jonah Jackson's composite ranking as a recruit is the 2nd-lowest of all scholarship players on the 2019 team. He was a very low 3-star (only a 2-star for his non-composite ranking on 247) with a rating of .8135.
Last year at Rutgers, Jackson was an All-Conference Honorable Mention at Guard, and he's expected to be our starter at Left Guard this season, so this definitely stood out to me.
*As a transfer this past off-season, Jackson was given 4-stars and a rating of .9500 by 247 in their transfer rankings. I used his high school ranking for any calculations he was a part of because I felt like this would even out the fact that 3 of the top-10 ranked players on our 2019 team haven't even started their first Fall Camps as Buckeyes (Fields, Zach Harrison, Garrett Wilson).
These stats are just something to look at, and I know they don't tell the full story. I'm predicting Bama and Georgia at #1 and #2 in this year's Team Talent Rankings, and Ohio State 3rd. In terms of both average player ranking and # of commits, they each beat us by a fair amount in the 2019 cycle.