Not much of anything in the articles. I had intended to listen to the podcast, but in November I was following the Moscow ID murders and the arrest in the Delphi case. So today I listened to it and picked up two tidbits. One was in the weeks after the murder LE received multiple calls from NC about a man with a gun and seen with a young girl. The podcast has a lengthy list of referenced articles and I tried to find that info. But 2-3 articles are from the Newport News VA paper, The Daily Press, and they are behind a paywall. The info on the tips may be there.
The other item on the podcast is a reference to a FOX8 podcast on the case where the sheriff states they have a short list of 3-5 suspects but they need more info. I do find it interesting that LE has conducted over 4,000 interviews. The employee who found Michael that morning has been interviewed multiple times.