First-cut analysis of [[WP:FA]], plus or minus a margin of error (I handcounted, and my list totals 828 not the given 826, oops):
Art, architecture, and archaeology - 20 Awards and decorations - 9 Biology and medicine - 44 Chemistry - 9 Computing - 28 Culture and society - 31 Education - 4 Economics - 15 Food and drink - 7 Geography and places - 66 Geology, geophysics, and mineralogy - 9 History - 68 Language and linguistics - 18 Law - 8 Literature - 54 Mathematics - 12 Media - 36 Music - 55 Philosophy - 7 Physics and astronomy - 35 Politics and government - 75 Psychology - 4 Religion and beliefs - 26 Royalty, nobility, and heraldry - 31 Sport and games - 48 Technology - 32 Transport - 31 War - 46
Some of these are a little vague - Computing and Technology might need reassessing, various odd articles could be classed elsewhere, the usual odd grouping of spaceflight and astronomy, and Culture and Society is a catch-all miscellaneous category which includes [[Exploding whale]], [[Octopus card]], [[Pet skunk]] and four articles on flags.
But, it's good enough for our test.
Awards and decorations - 9 Chemistry - 9 Education - 4 Economics - 15 Food and drink - 7 Geology, geophysics, and mineralogy - 9 Language and linguistics - 18 Law - 8 Mathematics - 12 Philosophy - 7 Psychology - 4 Religion and beliefs - 26 Royalty, nobility, and heraldry - 31
Wikipedia is supposed to have a good Mathematics coverage yet only 12 are featured. A quick glance also shows that a lot of science has poor coverage in the featured article. Too many people are focussing on politics.
Excuse me while I go off to find a Food article to feature.
Mgm