Names with a "[?]" are rockets that I couldn't find the exact name for. Blueprints I included all rockets that could be realistically depicted with the New Horizons parts available. Saturn C Series
Saturn C-2 (With CSM): Rocket Link
Saturn C-2 (S-V Upper Stage): Rocket Link
Saturn C-3 (With CSM): Rocket Link
Saturn C-4 (With CSM): Rocket Link