There were multiple sources I used, first started with dosbox, checked all codepages' ascii chart, made a screenshot, went thru all characters. Then I found int10h, crosschecked a few to not miss anything. Some glyphs are result of just the combination of letters and mods (accented characters mostly).

Then I found a pixel font which has about 40k glyphs as I remember, so I checked which can be derived from it in the style of the original VGA font.