For cutting in joints you probably want thin and narrow from spine to belly. A tough steel would be ideal in a fixed blade to avoid chipping against bone and any torquing motion.
This is a great read.
Steel Metallurgist Larrin Thomas uses tests of knife steels to rate the steels and explains the factors that control performance.
knifesteelnerds.com
3v would be the toughest, 4v, M4, Cruwear would be better cutters.
This Guardian4 model features a stonewashed CPM-3V blade with a saber grind and an od green micarta handle.
www.bladehq.com
This LionSteel M1 has a Blade HQ exclusive CPM M4 steel blade! It has a stonewash finish and a natural tan micarta handle. Made in Italy!
www.bladehq.com
I do the opposite; my fixed blade does most of the work processing. My replaceable blade is used for the exterior cuts, blade swapped and then for any joints.