Common tropes
This is characterized by a couple who are "on and off"
Will they, won't they?
This could be a woman in a mostly male cast, or a person of color in a mostly white cast
The one minority
Barney Stinson, How I Met Your Mother
Womanizer
This type of sitcom focuses on the day to day life of a family
Family sitcom
The relationship between Sam and Diane on Cheers is an example of this trope
I hate you, I love you
This archetype will come up with ridiculous schemes to get women
The Womanizer
Dwight Schrute, The Office
The Know-it-all/neurotic
This is the main type of cast in a sitcom
Ensemble casts
This storyline happens when a character starts dating a relative of another character
"Wait, you're dating my sister?"
The humor in many situations comes from this character's reactions, since they are usually the brunt of many jokes
The Square
Titus Andromedon, Unbreakable Kimmy Schmidt
The one minority
This type of sitcom focuses on the clashing of two different people
An Odd Couple sitcom
This storyline is usually used with teenagers, and used to test a couple's relationship
Fake pregnancy
This character often has a shady past, and can be feared by the other characters
That one creepy dude
Toby Flenderson, The Office
That one person that everyone hates
This type of sitcom usually does not have a laugh track
Mockumentary
This episode usually airs in December, and a character often goes on a journey like Ebenezer Scrooge
The Christmas Episode
This archetype is characterized by their quirkiness
The ditz
Kramer, Seinfeld
The ditz, the wacky neighbor
This was the first sitcom
Pinwright's Progress