I'm not familiar with Good Omens beyond seeing Crowley/Aziraphale promoted as a m/m pairing (though I realise that wasn't one of the pairings you nominated
cat_i_th_adage, it's just my primary osmosis exposure to Crowley as a character.) Based on Neil's post linked above it sounds like Crowley may fall under the genderqueer rule irrespective of pronouns, and a male actor certainly doesn't automatically confirm or deny the character's gender as male so if there's disagreement it would be helpful if we could get some more information from Good Omens fans about supernatural entities being agender in canon. We do consider Word of God when determining eligibility, but we defer primarily to canon where possible if we can't be sure how widely Word of God is known or consistent with canon.
Also, while we're here, should we be combining Good Omens TV and books if both are nominated or are there significant differences to the new show?