What is a group of geese called?

A group of geese, or a group of people, esp. if they are noisy are names gaggle.

Example:

A gaggle of kids followed him down the street.

Flock especially : a flock of geese when not in flight.

A group, aggregation, or cluster lacking organization.

A gaggle of reporters and photographers

An indefinite number participated in a gaggle of petty crimes.

Recent Examples on the Web:-

As a gaggle of press waited for the governor at the corner of Esplanade and San Jose Avenue, locals strolled by, showing mild curiosity at the more than a dozen video cameras and microphones set up on tripods, blocking the sidewalk.(Los Angeles Times, 11 Jan. 2023).