Is there a "finished" loading event similar to "startup"

I use the following automation when HA starts:

- alias: homeassistant start-up
  initial_state: true
  trigger:
    platform: homeassistant
    event: start
  action:
    - service: script.turn_on
      entity_id: script.customstartup

Is there a similar event like finished when HA is done with its initialization?

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