Moved to the correct forum
Answer:
If you check the API documentation txt files linked at the API version at the WIki you will find all events (search for EVENT_) and a list of EVENT_UNIT* in it.
EVENT_UNIT_CREATED
EVENT_UNIT_DESTROYED
Wiki:
https://wiki.esoui.com/Main_Page
API versions:
https://wiki.esoui.com/APIVersion
Check the entry at the current "live" version: "API TXT Documentation"
You can also have a look at the Wiki's Event list but it maybe not up2date! So be carefull with that event list and compar to the most current API version txt file contents!!!
https://wiki.esoui.com/Events