This is for all you 'Mech Warrior fanatics out there.
I know we have alot of Mechs still to be seen, so far we have Cougars, Vultures, Ullers, etc.
My question is, "What houses/clans made or invented which 'Mech designs with the current 'Mechs we have?
And are they concurrent with what Factions they are in now?

No they are not.
What people seem to forget is that at the time of the comm blackout, every faction just grabbed what military gear they could, be it from ROTS armories, salvage, previously owned stuff, etc.
The result is that every faction has a mix of tech, so it doesnt really make sense to be crying about the Highlanders having a Clan-tech Cougar/Uller/Jupiter/Ryoken II, or the Swordsworn with a Vulture/Thor/Ryoken, or the Steel Wolves with the Sun Cobra/Firestarter/Legionnaire.

They grabbed what they could, captured when the opportunity arose, and destroyed only when necessary.
Salvage, as usual in this universe, is the lifeblood of these armies.

Thats also why we got these "cookie-cutter" armies - A Spirit Cat Mech, a Swordsworn Transport, a Dragon's Fury Tank, and a Republic VTOL ...

-but, if you want to know what the Great Houses and Clans have, current to 3067 and all time periods prior, you can get Classic Battletech: Combat Operations. It has 30-some pages unit availability listings.:)

Is there an online version?

I'm prob. wrong on some of these but I think I'm pretty close.

Dasher - Ghost Bear
Koshi - Smoke Jaguars, used by all the warrior clans.
Uller - Jade Falcons
Black Hawk - Wolf Clan
Ryoken - Smoke Jaguars
Vulture - Originally Ghost Bears it was called the hajetaga
Thor - Jade Falcon
Mad Cat - Wolf Clan
Locust - Marik but used by star league, But all IS
Wasp - Star League But all IS
Spider - Marik, But all IS
Firestarter - Federated Commonwelth
Panther - Draconis Combine
Wolfhound - Stiener (used first by Kell Hounds And Wolfs Dragoons) then the Fed Com.
Hatchetman - Stiener
Centurion - Star League
Griffin - Stiener
Catapult - Capellan
Thunderbolt - Marik and Davion
Warhammer - Marik and Jade Falcons
Marauder - Star League
Zeus - Stiener w/ Davion help
Atlus - Fed Com but stole by Dranconis Combine
Black Knight - Star League - Comstar
Mongoose - Star League
Jupitar -
Shockwave -
Legionarre - Federated Suns
Dasher II -
Valient -
Tundra Wolf - Clan Wolf

Actually The Atlas is a SL Design comissioned by Kerensky himelf "The Atlas was designed as a last-ditch attempt to
ensure the superiority of the Star League's Regular Army
over the growing armies of the House Lords. General
Kerensky himself set down the specifications for the Atlas,
calling for "a 'Mech as powerful as possible, as
impenetrable as possible, and as ugly and foreboding as
conceivable, so that fear itself will be our ally.", But you can argue that different varients came from different houses, such as the AS7-K wich is a Draconis Combine varient.

Whlie the Catapult is also a SL mech " The CPLT-CL Catapult was produced by Hollis Incorporated in a limited production run between 2571 and 2573 under a special military contract with the Star League. It was officially classified as a close-support
vehicle, designed as a second-line defensive 'Mech with
strong offensive capabilities.

Also the Firestarter was originally desiged by Argile Technologies Located on the planet Skye, but now I'm just splitting hairs now aren't i? ;)

the vulture ... was called the Hajetaga??? by the Draconis Combine, it was.

the Clans call it the Mad Dog

Jupiter - Jade Falcon
Arbelest - Spirit cats

Though first seen in the Draconis Combine and shortly after in the FRR, the vulture has since appeared with all the clans. The Ghost Bears use it with the greatest frequency, but the Smoke Jaguars also favor the mech.

Tagged the Vulture by the FRR at the same time the Draconis Combine was labeling it the Hagetaga.

-Tro 3050

I knew that it came from the Clans but I guess I missed that one. Well at least you know what the Hagetaga is now.

Also to anyone who cares, most IS mechs are from the star league. I only put who popularized the mech. Like the Atlus. From the time that it was built on Hesperus for the Fed Com back to the time that it was stole by Draconis Combine on Quentin in 3039.

cougar -jade falcon
kodiac - ghost bear
novacat- novacat
madcat / timber wolf - wolf
mad cat II - wolf
supernova i think nova cat too

MadCat (Mk) II is a Diamond Shark design, but since they're so open with their tech (for the right price), it's everywhere. samething with the Ryoken II, but that one's Ghost Bear. first clan mech sold directly to the IS, wasn't it?

Hatamoto Series, Katana, NoDachi (and I think the Dragon/Grand Dragon) are all Draconis Combine

and the Arbalest, Targe, blade, and anything that says "Post Jihad" in its technical readout of its LE/unique is a WizKids designed Mech.

Actually, jackal, the Arbalest is a Clan Nova Cat design, not Spirit Cat.
The Factions DIDNT DESIGN ANY mechs. That's why SC don't have a non-unique arbalest... they just coulnd get their hands on one when the grid collapsed. Happens. They DID get their hands on a number of FirestartersMOD, hence the :^^^: Firestarter MOD.

Who Did the ryokenII? I can not Remember, Nor with the S-Cat 2, But the Sun Cobra is a Clan Steel Viper mech, And the Hell Bringer is also a SV Mech if i Remember correctly also Turkina , Jade Falcons. Also in Regaurds to clan mechs, VERY few mechs were used just by one clan.

according to the dossier for Caden the Ryoken II is a Ghost bear design