Master forum - Best way of navigation to sub forums (category or submenu)

[arms]

I've created a master forum and have 16 sub forums below (master forum shows all threads for 16 subforums combined)

There is a need to navigate to the subforums to select just 1 type.

I'm torn between creating a category list for the master forum like resource manager



or just having them in a drop down menu



Any feedback appreciated.

 

[Dad.]

If there is just 16, a list should be fine. Dropdown maybe not the best component, but sidebar widget or canvas menu is likely ideal.