Halo 5 to Halo 4 armor specifics

Here was a fun lil project I did. What is the armor in Halo 5 that has Halo 4 counterparts made of canonically
So what ever Halo 5 uses for the armor that was introduced in Halo 4. I put down below.

Note: This wont include halo 4/5 skins in this as that is totally different in both respective games. Only thing looked at is the models of stuff as they are the parts that make the armor.
You could recreate your spartan in Halo 4 if you so desire so also that is a bonus from this.

What I found curious was that Recruit used the Ricochet Forearms instead of the Recruit ones. I wonder what the canonical reason and also design reason there was for that.
I also wonder what a lot of the unknown stuff are. Cause Solider, Recon, Infiltrator, and GUNGNIR all have stuff Halo 4 doesnt have. Though old renders does have some of the forearms.
I also noted how a few armor sets are just plain reskins of other armors. More specifically the Helmet only armor from Halo 4.

Air Assault
Shoulders and body: Air Assault
Forearms: Ricochet
Legs: RG-63 Counter
Aviator
Shoulders and body: Aviator
Forearms: GV-09 Locking
Legs: Contoured
CIO
Shoulders and body: CIO
Forearms: Ricochet
Legs: Recruit
Commando
Shoulders and body: Commando
Forearms: Ricochet
Legs: Recruit
Deadeye
*Fotus Reskin
Shoulders and body: Fotus
Forearms: Fotus
Legs: Fotus
Defender
Shoulders and body: Defender
Forearms: Ricochet
Legs: LG-50 Bulk
Engineer
Shoulders and body: Engineer
Forearms: Outer-plated
Legs: XG-89 Narrow
Enforcer
Shoulders and body: Enforcer
Forearms: Ricochet
Legs: Over-locking
EVA
Shoulders and body: EVA
Forearms: Ricochet
Legs: Recruit
FOTUS
Shoulders and body: Fotus
Forearms: Fotus
Legs: Fotus
GUNGNIR
Shoulders and body: Gungnir
Forearms: *Missing armor that was actually made for Halo 4.
Legs: LG-50 Bulk
Infiltrator
Shoulders and body: Infiltrator
Forearms: *Unknown
Legs: Recruit
Locus
*Aviator reskin
Shoulders and body: Aviator
Forearms: GV-09 Locking
Legs: Contoured
Mark VI
Shoulders and body: Mark VI
Forearms: Mark VI
Legs: Mark VI
Operator
Shoulders and body: Operator
Forearms: GV-09 Locking
Legs: Contoured
Orbital
Shoulders and body: Orbital
Forearms: Twin-plated
Legs: Recruit
Pathfinder
Shoulders and body: Pathfinder
Forearms: Ricochet
Legs: Recruit
Pioneer
Shoulders and body: Pioneer
Forearms: Contoured
Legs: Contoured
Protector
Shoulders and Body: Protector
Forearms: Ricochet
Legs: Recruit
Raider
Shoulders and Body: Raider
Forearms: Ricochet
Legs: Recruit
Ranger
Shoulders and Body: Ranger
Forearms: Ricochet
Legs: Recruit
Recon
Shoulders and Body: Recon
Forearms: Contoured
Legs: *Unknown
Recruit
*The weird one
Shoulders and Body: Recruit
Forearms: Ricochet
Legs: Recruit
Rogue
Shoulders and Body: Rogue
Forearms: Outer-plated
Legs: XG-89 Narrow
Scanner
*Solider skin
Shoulders and body: Solider
Forearms: *Unknown
Legs: *unknown
Scout
Shoulders and body: Scout
Forearms: Inner-plated
Legs: Outer-plated
Soldier
Shoulders and body: Solider
Forearms: *Unknown
Legs: *unknown
Stalker
Shoulders and body: Stalker
Forearms: Contoured
Legs: Contoured
Strider
*Enforcer skin
Shoulders and body: Enforcer
Forearms: Ricochet
Legs: Over-locking
Tracker
Shoulders and Body: Tracker
Forearms: Ricochet
Legs: Recruit
Venator
Shoulders and Body: Venator
Forearms: Outer-plated
Legs: XG-89 Narrow
Warrior
Shoulders amd Body: Warrior
Forearms: Recruit
Legs: RG-63 Counter
War Master
Shoulders and body: War Master
Forearms: Contoured
Legs: Contoured
Wetwork
Shoulders and body: Wetwork
Forearms: Contoured
Legs: Contoured
Halo 5 Stuff with Halo 4 Armor
Argonaut
Forearms: Ricochet
Legs: Recruit
Cypher
Forearms: Inner-plated
Legs: Outer-plated