Identifying E101 and E102 purely by the front (E8, E78 tie in)

[Jobu]

We can rule out e102 based on the OP's post as that issue doesn't have Cy Young. If we assume that these wrong backs were printed at the same time as the baseball sheet (as opposed to one side or the other having been printed a year or more apart), then looking at the dates might help:

1909 E92 Croft's Cocoa
1909 E92 Dockman
1909 E92 Croft's Candy
1909 E92 Nadja
1909 E101 Anonymous
1909 D355 Niagara Baking
1910 E105 Mello Mint
1910 E78 Anonymous Prize Fighters
1910 E26 Dockman & Son Menagerie
1910 E8 Battle Ship USS Connecticut
1912-1916 T216 Kotton-Mino-Virginia Extra

Both wrong backs, E78 and E26, are listed as 1910 issues (not sure about the certainty of those dates). 1910 is also the date for the other front, E8 Battle Ships. There is only one baseball set listed as being issued in 1910, E105 Mello Mint. I looked at DJ's full baseball player list (Cy Young, Magee, Kleinow, Lobert, Wagner batting, Murphy, McGraw, Bemis, and Shean) and all are in E105. So it is possible that these are all wrong-backed E105s.