This playbook will breakdown the information about the operating system and its version into a textfile, which will hold the name(s) of all that match the same criteria.
A sample output could you look like:
OracleLinux-7.7.hosts
OracleLinux-7.8.hosts
OracleLinux-7.hosts
RedHat-6.10.hosts
RedHat-6.hosts
RedHat-7.6.hosts
RedHat-7.7.hosts
RedHat-7.8.hosts
RedHat-7.hosts
Scientific-7.5.hosts
Scientific-7.hosts
Ubuntu-18.04.hosts
Ubuntu-18.hosts
The RedHat-7.hosts would contain all the hosts contained within RedHat-7.8.hosts,
RedHat-7.7.hosts and RedHat-7.6.hosts
The same rule would apply for the Ubuntu, OracleLinux, Scientific, etc.