Sorry, but I don't know about the 3 disc types at all, and have no way to determine it.
You mention one being differently sized and that you put it in first.
Is that because of comparison to what you removed, or is it the only one that fits there?
Did you get OEM parts?
If so, the outer disc is supposed to be green.
If it ends that you have OEM parts, with one green one, and yet another that is different from the others and only fits inboard, then simply take it apart and check your stack build and rearrange if need be.
Short story, it seems to me that you are stuck having to open it up again.
I don't mind opening it up, but I know for a fact that at least one disk was different. I took the stack of disks and compared each one, including the markings.
Maybe this will help explain:
In this pic, you see items, 7, 8 and 9. Used in these quantities: 1, 6, 1
So you have 3 different part numbers used in the set of friction disks.
22201-MAE-000 qty 1
22201-MAE-E00 qty 6
22202-MAE-000 qty 1
I actually ordered thru Partzilla, and my order history shows that I ordered exactly that... 3 part numbers plus the clutch cable.
However, I don't remember seeing the difference other than the one "odd" one that was clearly very different.
I also didn't really need the clutch, once I changed the oil, the slippage went away and I wasn't able to reproduce it. When I measured the old vs new clutch pack stacked together... I could NOT tell the difference. I went ahead and installed the new disks that had been soaking for a long time.
By that time, they were LONG out of the package... So no chance of tracing it back using the package... I'd need to know the markings or how do you tell one from the other?
It didn't even occur to me, that there were 3 unique disks until I say the first pic posted and I couldn't remember if I actually set the 3rd disk type as last and don't know how to see which is which.