We don't know if they have soil samples from any of the vehicles.
We do not know what AS and the other children have told LE.
There's the neighbor, RD's statements about TS's timelines and she has basically contradicted herself in statement (wouldn't call it "testimony").
If you follow SM, then you would know some of these things (any messages, texts, further statements by neighbors, statements by store employees, Gannon's meds and medical history), but we cannot discuss them here. Some of it is in MSM, here:
What to Know About the Mysterious Disappearance of 11-Year-Old Gannon Stauch
But family members have been active on their own personal accounts (FB, Twitter, possibly other) with some of this information. Most of your list is valid, I don't think anyone but LE knows the status of all of that.
Missing from your "what we do know list" is the information from the neighbor. LE has confirmed more than once (and continues to confirm to MSM) that there is no evidence of Gannon returning to the house on Monday, that the neighbor's video was a "big break" in the case, that TS left the house and in such a hurry that she didn't have time to pack, that AS burst into tears when watching the video with the neighbor (eyewitness account), and that he said "She lied" about TS (eyewitness account). It's interesting that your list is focused on circumstantial evidence (as it should be) as it is almost always circumstantial evidence that convicts (but we do have two witnesses already in play here - TS's daughter and the neighbor).
TS also has confirmed that she was up in the area that LE has been so diligently searching. She was "lost" in the very area that, prior to that statement, LE already had reason to search. That says a lot. We can infer something about digital presence from those search efforts now dovetailing with TS's own statements.
We also know that many items were taken out of the Stauch house, we've seen inside the garage during the search (no woodworkings on the floor at that time, not much room to park a third car, either).
"They" did not go to BK (just a minor correction). TS sends her daughter to BK to get three meals (she "eats healthy" and did not eat BK). TS has also posted other visual evidence (we can't discuss it, but it should be mentioned that it exists). She has not posted the alleged "final selfie" that she took on Monday.
There are lot of things missing from your first list (the timeline) but some of the more important ones are that TS puts some things into the truck before setting out, one of them is long, looks like a hard object, and looks to be about 3 feet long. Gannon is not wearing what she says later that he is wearing (on the Missing Poster she created or helped create). I think this last thing is crucial, as who posts in error if they are uncertain about what a missing kid is wearing? And she certainly knew what he was wearing - as she says she took a selfie! So she lied on the Missing Poster about what he was wearing.