I suppose I'll save the Sphere-Builders. They're a nice callback to TOS's love for having the heroes fight advanced beings believed by the locals to be gods.
Silik (ENT S1, "Shockwave")
Duras (ENT S2, "The Expanse")
Na'kuhl Nazi (ENT S3, "Zero Hour")
Off-Camera Admiral Pressman (ENT S4, "These Are The Voyages...")
Holographic Recreation Of Unnamed Alien Criminal (ENT S4, "These Are The Voyages...")
The Klingon War (DIS S1, "Will You Take My Hand
Control (DIS S2, "Such Sweet Sorrow, Part 2")
Moll (DIS S5, "Life, Itself")
Primarch Tahal & The Breen (DIS S5, "Life, Itself")
Solar Flares (LD S2, "First First Contact")
D'Erika (LD S4, "Old Friends, New Planets")
Relga (LD S5, "The New Next Generation")
Silik (ENT S1, "Shockwave")
Duras (ENT S2, "The Expanse")
Na'kuhl Nazi (ENT S3, "Zero Hour")
Off-Camera Admiral Pressman (ENT S4, "These Are The Voyages...")
Holographic Recreation Of Unnamed Alien Criminal (ENT S4, "These Are The Voyages...")
The Klingon War (DIS S1, "Will You Take My Hand
Control (DIS S2, "Such Sweet Sorrow, Part 2")
Moll (DIS S5, "Life, Itself")
Primarch Tahal & The Breen (DIS S5, "Life, Itself")
Solar Flares (LD S2, "First First Contact")
D'Erika (LD S4, "Old Friends, New Planets")
Relga (LD S5, "The New Next Generation")