Sorry for taking long to answer, had some personal issues at home and stayed away from my computer for some time.
What licenses are the various parts in your collection of folders? Once we know that, we can figure out if there is a common license you can use to submit them all together.
From what I checked, their licenses are diferent combinations of CC0, CC-BY 3.0, OGA-BY 3.0 and CC-BY 4.0. From the sequence of licenses you gave, I think this would make the entire submission use CC-BY 4.0, but I am not sure if I really can use CC-BY 4.0 for stuff originally licensed with CC-BY 3.0 or the 4.0 version removed restrictions the 3.0 version had.
Sorry for taking long to answer, had some personal issues at home and stayed away from my computer for some time.
From what I checked, their licenses are diferent combinations of CC0, CC-BY 3.0, OGA-BY 3.0 and CC-BY 4.0. From the sequence of licenses you gave, I think this would make the entire submission use CC-BY 4.0, but I am not sure if I really can use CC-BY 4.0 for stuff originally licensed with CC-BY 3.0 or the 4.0 version removed restrictions the 3.0 version had.