Out of the box, Optima comes with three Categories of Posts: Articles, (Journal) Entries, and Notes.
Articles are long-form and evergreen
Journal entries are long-form and time-bound (typical "blog" post)
Notes are brief, lack titles, and time-bound (Twitter, Threads, etc.)
Enable/disable each of these post categories in _config.yml
How to enable/disable
How to enable/disable Recommended config value to add
How to enable/disable
How to enable/disable