According to [1], Chrony should be preferred for all systems except for the systems that are managed or monitored by tools that do not support chrony, or the systems that have a hardware reference clock which cannot be used with chrony.

However, when provisioning RHEL 7.x systems the 'chrony' package is not even installed on the provisioned system.

[1] https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-configuring_ntp_using_the_chrony_suite#sect-Choosing_between_NTP_daemon