All permutations:
X is G, Matt is C, Alen is G ~ impossible given Alen's last minute vote.
X is C, Matt is C, Alen is G ~ impossible given Alen's last minute vote.
X is G, Matt is G, Alen is G ~ impossible given nobody went for no lynch.
X is G, Matt is G, Alen is C ~ impossible given nobody went for no lynch.
Two interesting things so far:
1) Alen and G cannot be both Gs (because look at the four remaining options below in bold, in none of which Alen and X are both Gs).
2) Alen is G ONLY if X is a C and Matt is a G (so Matt, if you are a C, you should be sure as hell that Alen is a C

)
X is G, Matt is C, Alen is C ~ I rule this out cause I think if X was a G, no lynch would have been used to save his ass.
X is C, Matt is G, Alen is C ~ This means that Matt's fate was actually determined by a C in the last minute, which doesn't make any sense so I tend to rule this out.
These two are imo the only possible options:
X is C, Matt is G, Alen is G
X is C, Matt is C, Alen is C