Battle Honours and Mutton Chop were listed under their respective new ownership.

If we include things beyond the original 1840–1920 focus of this thread, here's an updated list:
Bac Ninh – Boshin War
Bohemian Troops – Thirty Years' War
Bohemian Troops – 1930s Czechoslovakia
Brigade Games – Gladiators
Brigade Games – Swashbucklers
Brigade Games – King Philip's War
Brigade Games – Pirates
Brigade Games (incl. former Victrix)– Napoleonics & War of 1812
Brigade Games – Victorian (some, not all)
Brigade Games – Steampunk
Brigade Games – Old West
Brigade Games – First World War (some, not all)
Brigade Games – 1920s "Mob Wars"
Brigade Games – Lost World Explorers
Brigade Games – Pacific War
Brigade Games – China at War
Brigade Games – WW2 Unique Miniatures (most, not all)
Brigade Games – Atomic Cafe
Claymore Castings – Anglo-Scottish Wars (late 14th century)
Dadi e Piombo – Moderns (some, not all)
Ebor – War of Spanish Succession
Empress – New Zealand Wars
Empress – Anglo-Zulu Wars
Empress – 3rd Anglo-Afghan War
Empress – Abessinian War
Empress – Spanish Civil War
Empress/Mutton Chop – Very British Civil War
Hinterland – Female Hussars (pre-)First World War
Mongrel – Moderns (most, not all)
Murawski – Napoleonic Polish
Musketeer – First World War (some, not all)
Newline Designs/Pontoonier – 3rd Anglo-Burmese War
Old Glory/Battle Honors – First World War (some, not all), Very British Civil War
Pro Gloria – 16th Century Europe
Redstar – French Indochina War
Tsuba – Russo-Japanese War
Tsuba – German Revolution
Warlord/Arsenal – 16th Century Ottoman Wars
Warlord/Bolt Action – Second World War (some, not all)
Warlord/Radetzky – Crimean War
Westphalia – Napoleonics
Phew…
