Hmmmmmm
1st mech
Distance 2 is very problematic, because there is only 1 weaphon. You can exchange Malice Beam and Hybrid Energy Cannon to Piercing Fox . Your HP is so low and this mech hasn't any shields((( It'll be destroyed by any kind of mech. Energy will help only with energy mechs.
Sorry, but 4/10
2nd mech
Zarkares.... A Legacy torso... But it's useless on 1-5/6 rank. Windigo has better stats and is lighter.
This mech isn't cooling-destroyer, that means murmur is useless. I'll recomend the Flame Wave, that push your opponent from painful distance 3.
This mech also has good health and low shields( Corrupt Light and Savagery can't seriosly shutdown your opponent.
355 energy capacity is very very low. 2 energy shots = EnergyBreak.
3.5/10
3rd mech
Good HP. But range 1 has only 1 weaphon. Enemy will cut the distance and you won't be able to do anything(
I'll recommend to change Annihilation and Nightfull to Rock Recoiler and second Armor Annihilator
Low energy/heat stats, no res... If you change your combine modules to 1 Heat Storage Unitand Platinum FortressIt'll be cool phys hunter) But it'll be a mech just for phys enemies!!!
4.5/10
Good Luck