For example https://www.tvmaze.com/shows/8611/loose-women/characters have 20+ "Panellist" characters, but https://www.tvmaze.com/search/characters?show_id=8611&q=panellist returns only 10 results.
This also affects character search when adding guest cast, making it impossible to reuse existing characters for some actors. For example, you can't add Kaye Adams as a Panellist using her previous appearance, there's no "Panellist [Kaye Adams]" in the list of suggestions https://imgur.com/a/pPM6HjC, but the character exist https://www.tvmaze.com/characters/718107/loose-women-panellist