I made a few erroneous guesses for the "Related features", which held me up for a while. Not quite happy with my parsing for 20d. An enjoyable workout from Kite.
Great, I got it right. I searched for Genius and the two options were Genius and Oldie. I haven’t yet finished my one and only caffeine coffee of the day but even I could work out that it must be Guardian as 258 follows 257😂