Database
db={"cars":[{"_id":ObjectId("5e8ef9a23e4f255bb41b9b40"),"Brand":{"models":[{"name":"AA"},{"name":"BB"}]}},{"_id":ObjectId("5e8ef9a83e4f255bb41b9b41"),"Brand":{"models":[{"name":"AG"},{"name":"AA"}]}}]}
Query
db.cars.aggregate([{"$project":{"desc":{$reduce:{input:"$Brand.models",initialValue:"Bad",in:{$cond:[{$in:["$$this.name",["BB","TC","TS"]]},"Good","$$value"]}}}}},{"$project":{"desc":1}}])