By default the Machine Configs rendered from MCO templates (for both master and worker machine pools) enable the following CRI-O metrics only:

"operations", "operations_latency_microseconds_total",     "operations_latency_microseconds", "operations_errors", "image_pulls_layer_size", "containers_oom_total", "containers_oom"

Instead of them, all metric collectors should be enabled by default when creating an OpenShift cluster.