Can someone, hopefully whose initials are GG, help with the identification of these obscure titan weapons?

Those are the metal weapons for the Mk.2 Metal Warlord ... Here are some on my Mk.II ... Here's some on my Reaver/Vandal ... mounted on the arms ...

_________________
Legion 4 "Cry Havoc, and let slip the Dogs of War !" ... "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf."

I'll have a go...

From top left across..

Las-Burner, Plasma Cannon, Not Sure.
Not Sure (maybe rocket launcher?), Plasma Blastgun, Chainfist (CCW)
Powerfist (CCW), Turbo Laser, Melta Cannon/Inferno Gun
Volcano Cannon

The one on the second row, far right looks more like a chainsaw head than a fist. At least to me anyway...

AFAIK the chainsaw-type titan close combat weapon has always been called a "chainfist". It has looked different on various generations of models though (and there have been different versions for different titans too i think).

Wasn't the big plasma gun a Plasma Destructor?

Could be Dobbsy. I think it depends on what time period you look at it from. I think when that weapon came out it would have been called a Plasma Cannon, these days it could well represent a Plasma Destructor. I am sure it would work fine for either.

Thats what it loooks like to me too.

Yeah, I thought so too. There is a CCW Head on the epicollector site, but I bet someone has a picture of it on a model....

Legion 4?

Yeah I think you guys are right - one of the CCW-heads.

Top right might be the barrage missile on second look.

Top row -Las cutter, plasma destructor arm, missile launcher
row 2- Corvus assualt arm, plasma cannon, close combat head
row 3- power fist, gatling cannon, melta cannon
row 4 - defence laser

The Gatling Cannon can't be one of the weapons - it came with the Mk 2 Warlord (you can see it on the right arm of L4's version). I'd assume that is either a Turbo Laser Destructor or a Laser Blaster. Probably the latter, which with the original plastic warlord weapons had a pretty similar appearance - a multi-barrelled laser weapon.

I'd say:
Top row -Las burner; plasma destructor; barrage missile launcher
row 2- Corvus assualt arm; plasma cannon; close combat head
row 3- power fist; laser blaster; inferno cannnon or missile launcher? doesn't look much like a melta weapon to me
row 4 - volcano cannon

The original Mk 2 came with gatling blaster, quake cannon, support missile and chainfist, so thats most of the weapons covered - still no melta cannon though.

I'd say:
Top row -Las burner;plasma cannon; barrage missile launcher
row 2- Corvus assualt arm; plasma destructor; close combat head
row 3- power fist; laser blaster; inferno cannnon
row 4 - volcano cannon

My turn

Top - Arm Laser Burner | Arm Plasma Destructor | Carapace MLRS
2 - Arm Corvus Assault Pod | Carapace Plasma Cannon | Close Combat Head
3 - Powerfist arm | Arm Laser blaster | Carapace Meltacannon
4 - Carapace Volcano Cannon