let me make brief comment ..........
your IV. gruppe emblem is completely wrong, that was for the Geschwader stab of JG 300 only a goof-ball design by Walter (over-claiming) Dahl.
Iv./JG 3 flying Bf 109G-6's in 43 and in spring of 44 used the "main emblem" and in May-late July on the blue-black cowlings of the Sturm-Fw's of IV.Sturm/JG 3, then all markings including emblems were removed from the SturmFw's leaving them plain and ugly though sinister.
the white Rumpf band (fuselage) was carried on 109's and Fw 190's from January 44 till fall of 44 and then removed when JG 3 went to defend Berlin in it's death throes.