You can add whatever types of issue type you want via admin -> issues -> issue types, and then include them on the board by making sure the board filter selects them.
Epics however, are a special case - they have additional functionality tied to them (assuming you are using JIRA Software). You can't use other issue types like that, it's Epics only.
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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