Starting with Zabbix 6.0 a new template naming structure was introduced. Getting rid of the "Template" prefix as well as moving the 'type indicator' like "OS" to the tags.
There was one oversight into making this a structured implementation of template names. All templates get a suffix: 'by MONITORINGTYPE':
"by Zabbix agent"
All except... the SNMP protocol, which is just "SNMP". Suggestion to make this consistent in the next Zabbix release and include the suffix "by SNMP".