A culture of anthropologists.
A galaxy of astronomers.
A curse of exorcists.
An infection of lawyers.
A clown car of politicians.
A drama of doctors.
A pontificate of philosophers.
A disinformation of reporters.
A line of programmers.
A reaction of chemists.
A scrum of REALTORS ™.
A congress of clowns.
A deluge of plumbers.
A smug of engineers.
A grievance of HR reps.
An Elmer of pastors.
A grope of priests.
A markup of retailers.
A killjoy of editors.
That’s all for now.
Hahahahaha.
This just in:
A Pool of Geneticists OR
A Sequence of Geneticists
A Bundle of Neurologists OR
A Ganglion of Neurologists
From Archer the other night:
A mutiny of clowns.
Sir, I take offense at this. It should probably be one of the following:
A correctness of engineers
A realism of engineers
A clever hack of engineers
or, if you feel really giddy about the profession that has done more to better and extend human life than any other profession, 
A triumph of engineers.
A frag of gamers.
A loupe of jewelers
A shock of paramedics.
A plaque of dentists.
Thank you for proving my point, I rest my case: a smug of engineers.:o
A structure of programmers
A buzz of ag pilots
A hoop of hula dancers
A display of docents
12 money lenders is a lock, making 11 a just-shy lock
A buggery of priests
A parcel of realtors
A spell of wizards
A squeal of pig farmers
A Johnson of condom makers
A curd of cheese makers
An ascention of balloonists
A scramble of quarterbacks