I’m in the KC area as well. Years ago I reported this to Silicon Dust and they said to contact the station to add their logo to Gracenote. I emailed the station and never heard back from them.
What I do to fill the gap is to create a custom source for 38.1 with the following text.
#EXTM3U
#EXTINF:-1 channel-id="38.1" tvg-id="38.1" tvg-chno="38.1" tvg-logo="https://ewscripps.brightspotcdn.com/f1/8a/78781d374f80b7615180dfe05d7b/thespot-kansas-city-38-cobalt-no-ew.png" tvc-guide-stationid="34773" tvg-name="KMCIDT" group-title="HD",KMCI
http://192.168.1.181:5004/auto/v38.1
Replace 192.168.1.181 with the ip of your Hdhomerun. Then in the hdhr source settings select manage lineup and void out 38.1 channel with the red circle with slash. This will remove the the missing logo and allow your new custom channel source with the logo to take its place in the guide. Make sure you choose prefer logos from the m3u in the bottom options.
Edit: changed the old logo I had for their new logo