Here is the Extension Values I came up with for FGM Catchers, based on the contracts on the various teams throughout the league. Again, I did not include any Catchers on (P-n/a) contracts.
Old Rank New Player
$13.0 1 $12.0 McCann, Brian
$12.5 2 $6.0 Molina, Yadier
$10.0 3 $6.0 Santana, Carlos
$6.5 4 $5.0 Avila, Alex
$6.0 5 $5.0 Ruiz, Carlos
$5.5 6 $4.5 Montero, Miguel
$5.0 7 $4.5 Pinto, Josmil
$5.0 8 $4.0 Montero, Jesus
$4.5 9 $4.0 Doumit, Ryan
$4.0 10 $4.0 Gattis, Evan
$4.0 11 $4.0 Wieters, Matt
$4.0 12 $4.0 Posey, Buster
$4.0 13 $4.0 Martin, Russell
$4.0 14 $3.5 Saltalamacchia, Jarrod
$4.0 15 $3.5 Jaso, John
$3.5 16 $3.5 Pierzynski, A.J.
$3.0 17 $3.0 Suzuki, Kurt
$3.0 18 $3.0 Lucroy, Jonathan
$3.0 19 $2.5 Iannetta, Chris
$2.5 20 $2.5 Hanigan, Ryan
$2.5 21 $2.5 Rivera, Rene
$2.5 22 $2.0 Conger, Hank
$2.0 23 $2.0 Navarro, Dioner
$2.0 24 $2.0 Ramos, Wilson
$2.0 25 $2.0 Castro, Jason
$2.0 26 $2.0 Flowers, Tyler
$2.0 27 $1.5 Cervelli, Francisco
$1.5 28 $1.5 McKenry, Michael
$1.5 29 $1.0 Gosewich, Tuffy
$1.5 30 $1.0 Hundley, Nick
$1.5 31 $0.5 Perez, Roberto
$1.5 32 $0.5 Ross, David
$1.5 33 $0.5 Joseph, Caleb
$1.5 34 $0.5 Brantley, Rob
$1.0 35 $0.5 Ellis, AJ
$1.0 36 $0.5 Soto, Geovany
$1.0 37 $0.5 Trevino, Jose
$1.0 38 $0.5 Corporan, Carlos
$1.0 39 $0.5 Pena, Brayan
