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Which groups emerged from the Social Democratic Party of Germany after its split over war credits in 1914?

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Following the Social Democratic Party of Germany's (SPD) decision to vote in favor of war credits in 1914, the party experienced an internal split that led to the emergence of two primary groups:

Independent Social Democratic Party of Germany (USPD): Led by centrists such as Karl Kautsky, this group broke away from the main party due to disagreements over the war effort.1
Spartacus League: Led by Rosa Luxemburg and Karl Liebknecht, this left-wing faction opposed the war and advocated for revolution. In December 1918, the league became the Communist Party of Germany (KPD).12