Suggestions by @nomad7

Elizabeth Gillies

as Hedwig Kiesler in Biopics for famous women

Score: +1

Luca Marinelli

as Benito Mussolini in Kaiserreich

Score: +2

Elizabeth Gillies

as Hedy Lamarr in Hollywood Goddesses

Score: +1

Nicolas Duvauchelle

as Marcel Déat in Kaiserreich

Score: +1

Elizabeth Gillies

as Hedy Lamarr in Old Hollywood Actresses

Score: +1

Elizabeth Gillies

as Hedy Lamarr in Actors Portraying Actors

Score: +1

Elisabeth Gillies

as Hedwig Kiesler in Elegance Unveiled: The Hedy Lamarr Chronicle

Score: +2

Michael Fassbender

as Paul von Hindenburg in Kaiserreich

Score: +2

Nawazuddin Siddiqui

as Mohandas Gandhi(Mahatma Gandhi) in Kaiserreich

Score: +2

Karen Fukuhara

as Nagako(Empress Kōjun) in Kaiserreich

Score: +1

Tomohisa Yamashita

as Hirohito(Emperor Shōwa) in Kaiserreich

Score: +2

Kento Yamazaki

as Yasuhito(Prince Chichibu) in Kaiserreich

Score: +1

Valeriya Fedorovich

as Maria Spiridonova in Kaiserreich

Score: +3

Ilya Lyubimov

as Alexander Kolchak in Kaiserreich

Score: +1

Viktor Horinyak

as Boris Savinkov in Kaiserreich

Score: +2

Ivan Yankovskiy

as Lavr Kornilov in Kaiserreich

Score: +1

Konstantin Khabenskiy

as Aleksandr Kerensky in Kaiserreich

Score: +1

Guillermo Barrientos

as Alfonso XIII in Kaiserreich

Score: +2

Kıvanç Tatlıtuğ

as Mustafa Kemal in Kaiserreich

Score: +1

Hugh Grant

as George V in Kaiserreich

Score: +2