The fonts are built into the terminal application, not the BBS, so Netrunner doesn't have many of the amiga fonts or most other IBM fonts but Syncterm does have a few. You should look at your terminal application instead of the BBS/Mystic for the solution. Mystic will only send the ANSI codes to the terminal receiving, the terminal will render whatever it needs to based on the codes received.
That's true with the amiga fonts and some others, but the cterm protocol (that syncterm uses) allows loading remote fonts as well. I don't know of any bbses other than synchronet and talisman that actually use it, and it's not really relevant here but I thought you might be interested to know if you didn't already.
So I figured out, I think, the problem and came up with a temp fix for this  issue.  Any other I originally posted I did not see any messages from as I had  an issue with message tossing that I've since fixed for TQWnet.
1.  The Netrunner nr21_l64.zip on 
http://www.mysticbbs.com/downloads/
    adds 132x37 support however I am unable to get Topaz nor Codepageswitc
    to work.
2.  Netrunner nr20_l64.zip on the same page does not support 132x37
    however the Amiga fonts are built into the terminal (not as many as
    Syncterm but there are Amiga fonts such as Topaz ..).
3.  I had to copy and paste the ANSI code into the ansi file to get it  
    to work, I was unable to do so with pipe code | SF03 to turn on
    Topaz.  It was a bit more work but my cool light bar menu works (for
    me anyway ..)
4.  For some reason my codepageswitch.ans was either corrupt or who 
    knows ... but it wasn't restoring prior to backing out of my message
    menu to my main menu. A simple copy of the same file over from The      Ruins to the Underground's text directory did the trick.  The Ruins
    is running on v47 while The Underground is on v49.  
So now I have 3 terminal programs I'm using (hehe ..) to get TUG tight
and right.  The Ruins is up on www.theunderground.us:9707 for those who
want to check it out.  No FTN's but some neat stuff I had done at one 
time.
As for my other issues, I noticed Apam reply to mL who had replied to me.   However, I did not see your reply Meatlotion.  I had a tossing issue where I  had moved from ~/mystic/msgs/ to ~/mystic/msgs/tqwnet to better organize my FTN 
files within /msgs.  Mystic did not like that without me performing some voodoo 
magic that managed to work for all networks except MetroNet (still not tossing  mail  .. blah ..) So if someone had suggested other fixes, I didn't see them :( 
I'll try a rescan.
Apam, what do the cool kids use to log in new to your BBS?
|15-|12t|04G
|15www|08.|15theun|07dergrou|08nd|07.|08us|15:|0810023
... Back up my hard drive? I can't find the reverse switch!
--- Mystic BBS v1.12 A49 2023/04/30 (Linux/64)
 * Origin: www.theunderground.us Telnet 10023 SSH 7771 (1337:3/132)