GREAT idea

I tried to break the list down in my original post. Any corrections would be helpful. Anyone know what these are?
MCP
ST
CDT
B25
RWB

B25 is model25 handle, Brass
ST is sawteeth
CDT is reduced tang (e.g. model 15 available in "full" by default, CDT is an available option)
RWB is default spacer arrangement, red white and blue

Your "SS1"..."SS3" is missing one detail, those are the codes for stainless steel.

I can no longer edit my original post. SO here you go with some corrections.
Blade
SS1 Stainless Steel Up to and including 5 1/2"
SS2 Stainless Steel From 5 1/2 - 8"
SS3 Stainless Steel Over 8"
ST Sawteeth
SNT Sawteeth-No Teeth

Handle
BPH Border Patrol
KNH Knurled Model 18
STG Stag
BM Black Micarta
GM Green Micarta
THU Thuya Burl
WA Walnut
SFG Single Finger Groove
FG14 Finger Grip #14
#2 Commando

Hilt
NS1 Nickel Silver Single
NS2 Nickel Silver Double
NS1(SQH) Nickel Silver Single (Old Style, Squared Top)
BH1 Brass Single
BH2 Brass Double
BH1(SQH) Brass Single (Old Style, Squared Top)
NS2(FCH) Nickel Silver Double (FCH)
BH2(FCH) Brass Double (FCH)
NS2(#14) Nickle Silver Double 1/4"
BH2(#14) Brass Double 1/4"
NS2(#14H) Nickel Silver Double #14 Style with #18 Holes
BH2(#14H) Brass Double #14 Style with #18 Holes
LH Brass Double Lugged
NS(RDH) Nickle Silver Reduced
FCH Forward Curve
RWB Red, White, Blue Spacers

Butt
BRP Brass Plate
DB Duralumin Cap
NSB Nickel Silver Cap
BB Brass Cap
NSP Nickel Silver Plate

Sheath
MAB Model A Black
MCB Model C Black
NHS No Hone Sheath

Misc
CI Compass
WT Wrist Thong
BTB Brass Hardware on a Trailblazer Model 27 5 3/4"
CDT Reduced Tang
B25 Model 25 Handle, Brass
N25 Model 25 Handle, Nickel Silver

Unknown
MCP

Rob...I replyed to this earlier,about the N25 and B25...LOL...at least he believes 1 of us! 8-)

Ah so you’re saying N25 is a model 25 handle with nickel silver. Man it’s confusing.

There's no MCP designation, there are however over 700 "acronyms" we use....so good luck with that...

N.S.

Ahhhh, ahhhh, at least there’s an end number. Lol