What are these users created by the AMQ Streams operator?

Solution Verified - Updated -

Issue

With the default configuration using the AMQ Streams Operator (Kafka, Topic and User), the following users are defined automatically as super users:

super.users=
User:CN=kafka-base-kafka,O=io.strimzi;
User:CN=kafka-base-entity-topic-operator,O=io.strimzi;
User:CN=kafka-base-entity-user-operator,O=io.strimzi;
User:CN=kafka-base-kafka-exporter,O=io.strimzi;
User:CN=kafka-base-cruise-control,O=io.strimzi;
User:CN=cluster-operator,O=io.strimzi   

Questions:
1. What are these users
2. Are these mandatory for normal Kafka cluster operations using operators?

Environment

Red Hat AMQ Streams - 2.x

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