source ports I use for various classic fps games:
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Doom (classic doom games): PrBoom+ (GlBoom+ has graphical glitches and isn't very good)
Wolf3D (and variants): ECWolf
Quake 1: QuakeSpasm
Quake 2: KMQuake 2
Star Wars Dark Forces: DarkXL
Rise Of The Triad: WinROTTGL
Duke3D: eduke32
Shadow Warrior: classic redux is fine and i dont use a source port for it.
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Things you'll need patches for:
RTCW (IORTCW)
Quake 3 (ioQuake)
Unreal (oldunreal)