[{"_id":"1","cdate":{"$date":"2023-11-16T00:00:00.000Z"},"AP Name":"Name-1","Model":"Model-1","Colour":"red"},{"_id":"2","cdate":{"$date":"2023-11-16T00:00:00.000Z"},"AP Name":"Name-2","Model":"Model-2","Colour":"green"},{"_id":"3","cdate":{"$date":"2023-11-16T00:00:00.000Z"},"AP Name":"Name-3","Model":"Model-2","Colour":"blue"},{"_id":"4","cdate":{"$date":"2023-11-16T00:00:00.000Z"},"AP Name":"Name-4","Model":"Model-1","Colour":"green"}]

db.collection.aggregate([{"$group":{"_id":"$Model","Devices":{"$push":"$AP Name"}}},{"$project":{"_id":0,"Model":"$_id","Devices":1}},{"$sort":{"Model":1}}])