And Start:
Sweeper
Ampharos
Hasty/Naive@Expert Belt/Life Orb
252 Speed/162 Sp.Attack/96 Attack
Thunderbolt/Charge Beam
Hidden Power[Grass]
Signal Beam
Fire Punch
This one can do well on UU envoirment 'cause of it's quite big type Coverage hitting 10 out of 17 types Expert Belt is an option, but there is Life orb to increace the power but it will make your HP drop each time you attack.
Thunderbolt: Obvious choice, with 95 Base Power that increases to 142,5 with STAB it is a good option, but there is and
Charge Beam: may have less Base Power(only 50!) but the side effect is not something to be overlooked: 70% of Sp.Attack raising!
Hidden Power[Grass]:Ampharos' only way to deal with the Ground and Rock types that will try to wall you.
Signal Beam:Just for type coverage and deal with Psychic or Dark-type pokemons that you may encounter in UU enviorment
Fire Punch:Again for type coverage and dealing with Steel and Ice types
Support
Ampharos
Bold@Light Clay/Leftovers
252 HP/184 Defence/74 Sp.Defence
Light Screen
Reflect
Hidden Power[Grass]/Rest
Thunderbolt
Ampharos has access to both Light Screen and Reflect that makes it a good Supporter and what's best from Light Clay as an Item? Although, if you don't want to use Rest, Leftovers is prefered, cause Ampharos doesn't have any way to recover HP.
Light Screen and Reflect for Surpressing the Damage, and after these Ampharos is most likely to be Changed.
Hidden Power[Grass]: the Ground Types that will come to ruin you will be knocked out after one or two Hidden Powers, if behind Reflect!
Rest:If you don't want Leftovers, Rest is better, cause you will have no way to heal up
Thunderbolt:No explanation needed
Feraligatr: Whatever Spyros said, but Adamant Nature is better for me
Typhlosion
Naive@Expert Belt
252 Speed/184 Attack/74 Sp.Attack
Flamethrower
Hidden Power[Grass]/[Ground]
Thunderpunch
Brick Break
Hitting 10 out of 17 Types with Hidden Power Grass and 12 with HP Ground, I believe that Expert Belt is the best item option for this set, while he takes 25% damage from Stealth rock, Life orb is not an option here.
Flamethrower:95 Power STAB move that heats up to 142,5 with STAB fired from a Special Attack of 272 can deal serious damage, while with weakness, the power is 2,4 times greater due to expert belt if 2X weakness and 4,8 if 4X weakness
Hidden Power[Grass]/[Ground]:Hitting the Rock types that will try to kill you from the Special side, is something that will make them think again before coming out.
Brick Break:I think that it is better than Focus Blast, 'cause it can 2HKO a SP.Def trained Blissey, while fired from an attack stat of 250.
Thunderpunch:Dealing with the Water types that will come to block your way and killing Flying types easier.
You may think that if with Hidden Power Ground hits more types, then why use HP Grass? 'cause it can deal with Quagsire or Whiscash that can easily wall you without Hidden Power Grass.
Typhlosion was a Hard one, 'cause of it's small movepool, I couldn't think something better...
Wall
Lugia
Bold@Leftovers
252 HP/204 Speed/54 Defence
Calm Mind
Reflect
Roost
Ice Beam
Calm Mind: Lugia has alredy terrific Sp.Defence Stat and the Idea of boosting it is not bad at all, and it also boosts the power of Ice Beam
Reflect:A 130 Base Defence stat cannot do something better than being higher and Reflect does exactly this, and after a couple of CMs Lugia is imperial!
Roost:this move does not only recovers HP, it also gets rid of the Flying type, powering down Kyogre's Thunder and Groudon's Stone Edge
Ice Beam:After a couple of CM, this move can take down every pokemon that is not resistant to it.
For Lugia, thank NM2, 'cause I copied the set from our Pokemon Of The Week.
Hope I helped!