In The Last Jedi we see some of the First Order's naval forces, including:
- Mandator IV-class Siege Dreadnought
- Mega-class Star Dreadnought
- Resurgent-class Star Destroyers (maybe a dozen of them)
- Other smaller craft (e.g. TIE fighters)
Based on my research on Wookieepedia only one Mega-class Star Dreadnought was built, but I couldn't find much information about how many Mandator IV-class Siege Dreadnoughts and Resurgent-class Star Destroyers the First Order had. Do the various supplemental sources have any more information?
Do the First Order's fleets seen in The Last Jedi constitute the bulk of the navy, or are they just a small portion of the naval forces?
I am primarily interested in learning the strength of the First Order's navy in capital ships during the events of The Last Jedi.