3 Core First Build V1
I aggregated the deets for these builds from the following decks:
https://ringsdb.com/fellowship/view/666/the-line-unbroken-core-set https://ringsdb.com/fellowship/view/1052/escape-from-dol-guldur-progression-series-3 https://ringsdb.com/fellowship/view/6078/escape-from-dol-guldur-progression
I looked at common threads of which cards were 1x, 2x and 3x and made educated guesses for the gaps. If every deck has 3 Core Gandalf's then that leaves 47 sphere cards, half that is 23.5 so I decided that whichever sphere had two Heroes would get 24 cards and the other would get 23. I also created what I call the "Warming the Bench" additions/subtractions in case I want to swap spheres around, again using the above decks to see which Hero gets to warm the bench and that is Théodred. If I swap him in, gets a Grim Resolve and Eleanor steps down taking with her one of the Strength of Will from the sphere. With those two Heroes and two Events quickly jumping in and out, I can do any two deck fellowship with every possible duo-sphere combination. I wanted this flexibility so that my wife and I can quickly change up as we play to better our chances of finding out what we do and do not like. (Up to now we've only played monosphere with 1 core, leaving two of the sphere's starter decks in the box)
I plan to make fellowships for each of the possible combinations cause I'm a little OCD like that but, for now, here they be.