We have created initial view of reports but doesn't have a correct JQL query yet. We have tried the following queries for Level 2 and Level 3 support on their designated department and these are the following JQL each of them

L2 = Level 2 Support
L3 = Level 3 Support
ICT Group = This is a group where the L2 and L3 are.
Total of Tickets =issuetype in ("[System] Incident", "[System] Service request") AND assignee in (membersOf("ICT Support Group"))
Service Delivery = issuetype in ("[System] Incident", "[System] Service request") AND Department ~ "Service Delivery"
Solution Management= issuetype in ("[System] Incident", "[System] Service request") AND Department ~ "System Support"
Data Science and Analytics= issuetype in ("[System] Incident", "[System] Service request") AND Department ~ "Data Science and Analytics"
Information Security = issuetype in ("[System] Incident", "[System] Service request") AND Department ~ "Information Security"
Governance = issuetype in ("[System] Incident", "[System] Service request") AND Department ~ Governance
No Department = No JQL yet
Other Department = No JQL yet