UPDATE:
Installing mongo-spark-connector_2.12-10.3.0-all.jar from Maven does NOT require the JAR files below to be installed on the cluster to display the dataframe

• bson
• mongodb-driver-core
• mongodb-driver-sync

Also, I noticed that both DBR 13.3 LTS and 14.3 LTS work fine with this specific spark connector JAR file installed on the cluster.