Is there a standard for custom hierarchy levels in Advanced Roadmaps?

[Frederik Vindum]

In Advanved Roadmaps the default issue hierarchy level is Epic -> Story/Task -> Sub-task. There is an option to extend this issue hierarchy with custom named issues.

I am unable to figure out if there is a standard for custom hierarchy levels but I did find two variants on Atlassian sites:

#1 Odyssey -> Initiative -> Epic -> Story/Task -> Sub-task

Ref. https://wac-cdn.atlassian.com/dam/jcr:8dae2ccf-97a2-4335-95cb-2e356e83d2c2/4%20hierarchy%20levels.png?cdnVersion=520

#2 Purpose -> Vision -> Goal -> Strategy -> Initiative -> Epic -> Story/Task -> Sub-task

Ref. https://www.atlassian.com/agile/project-management/epics-stories-themes

Is there any standard for building the hierarchy above Initiative?

[Matt Doar]

I really have to ask what the purpose of these levels above Initiative are.

How do they improve the planning and project management of a company? 

[Frederik Vindum]

It is per request from the organization. I guess they think they need it.

To comply, I added a Theme level above initiative.