Components are, like in MechCommander 1, split into 4 groups, Short range weapons, Medium range weapons, Long range weapons and sensors. Within these 4 groups there are also Clan variants on most components. Within the groups I've ordered them into those that dont need ammo followed by those that dont. Any Clan counterpart weapon is followed directly after its normal version.

Short range weapons

Flamer Array
Machine Gun Array
Laser
Clan Heavy Laser
Pulse Laser
Clan Pulse Laser

Streak SRM Pack
Clan Streak SRM Pack
Heavy Autocanon
Ultra Heavy Autocanon
Clan Ultra Heavy Autocanon

Medium range weapons

PPC
ER Laser
Clan ER Laser
Large Laser
Clan Heavy Large Laser
Large Pulse Laser
Clan Large Pulse Laser

Medium Autocanon
Ultra Medium Autocanon
Clan Ultra Medium Autocanon
Thunderbolt Missile

Long range weapons

ER Large Laser
Clan ER Large Laser
ER PPC
Clan ER PPC

LRM Rack
Clan LRM Rack
Swarm LRM Rack
Light Autocanon
Ultra Light Autocanon
Clan Ultra Light Autocanon
Gauss Rifle
Clan Gauss Rifle
Light Gauss Rifle
Long Tom Canon

Others

Armor
Heat Sink
Jump Jets