Who's the make on the one second from left?
Are the blade materials you stated a type of stainless?
From left to right, knife 1 & 2 are by Rick Menefee. No. 3 is by his brother Rocky. No. 4 is one of Ricks. No. 5 is by Gary Dukeman, another Oklahoma knifemaker and is D2,(a type of carbon steel) IIRC.
IIRC the Dukeman knife was a modified bird and trout of his own design.
No. 2 is marked "Proto" which is now called the "catfish", IIRC.
Many of Ricks knives are 154 CM (a stainless steel which you can "google")as is this one, IIRC. I got No. 2 from VinceM here on the forum. Rd/orange liners and dark green linen Micarta scales (IIRC).
If I'm incorrect in any of these details, perhaps Vince, Rick or Rocky can correct my error.
Best,
GWB