8621 Tech Readout 3058 (the original) provides some good deployment information for 'mechs such as the owens pg 82, Strider pg 84, Firestarter pg 86, Nexus pg 96, Falcon Hawk pg 98, Talon pg 104, Raijin pg 110, Lynx pg 118, Spartan pg 138, Thunderhawk pg 152, Nobori-Nin pg 170, Cauldron-Born pg 176, Supernova pg 196, Kodiak pg 190.
35015 Tech Readout 3058 (Upgraded) also has useful information.
1645 Invading Clans provides information on the composition type of each clans units. This could be useful to reference against when determining for example the number of Nobori-Nin Omni mechs.
1710 Twilight of the Clans would be most useful to you as it has the complete Battleforce rosters (stating every mech deployed) for: Knights of the Innersphere, 11th Lyran Guards, Kingston's Legionaires, 2nd St Ives Lancers, 4th Drakons, 1st Kathil Uhlans, MacLeod's Regiment of the Northwind Highlanders, Royal Black Watch Company, Com Guard 2nd Division, and the Eridani Light Horse.