randoms

Arbitrary unconnected individuals

Randoms are people you don't know—strangers encountered without introduction or selection.

The word carries slight dismissiveness, implying these people lack connection to you or your group: The party was just us and a bunch of randoms, Some random walked up and started talking to me.

In gaming, randoms are players matched with you by the system rather than chosen teammates.

strangers

unknowns

Undetermined quantities

nobodies · bystanders · onlookers

unpredictability

wildcards

Unpredictable factors or elements

flukes · happenstance · arbitrariness · lottery · luck of the draw · crapshoot · coin flip · roll of the dice

variety

assortment

Mixed collection of things

mixed bag · potpourri · medley · motley · collection · selection · mix · sampling · smattering · array

Opposites
social familiarity

randomsfriends

Voluntary close relations

acquaintances · family · loved ones · close friends · besties

selectedness

randomsinvitees

Those formally asked

chosen ones · selectees · recruits · nominees · appointees

status/importance

randomsVIPs

Notable people, abbreviated

celebrities · notables · somebodies · insiders · elites

Phrases
Family

random, randomly, randomness, randomized, randomize, nonrandom, randomizing, randomisation, randomizer

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Everyday, not technical · Rated G