I decided to apply Michael Hite's excellent video on root searching (where he used the New Testament) to the Lexham Hebrew Bible. I did a root search on sh-m-r in Genesis, using the analysis option, sorted by root and then lemma. I got the following results:
The root of the tetragrammaton (!?) comes up with two hits for which the lemma is shammah (!?), in Genesis 36:13 and 17. The root mishmar comes up with 7 results, 6 for the lemma mishmar and one for the lemma mishmeret. (These seem accurate hits for the lemma, but the root should be shamar, not mishmar). There are two results each for the roots shemaryahu, shemaryah, and sh-m-ayin, all with the same lemma (shammah) occuring Gen 36:13, 17. There is one result for the root shimron and the lemma shimron.
Finally, there is the almost accurate information at the bottom. Under the root sh-m-r, there is the lemma shamar with 15 results, the lemma mishmar with 6 results, the lemma shammah with 2 results (this is the not accurate part), the lemma mishmeret with 1 result, and the lemma shimron with 1 result.
Since beginning to write this post, I have discovered that the problem is that in the Lexham Hebrew Bible, the word shammah in Gen 36:13, 17 is tagged with lemma 2 shammah and 5 different roots. This is really weird.
I did another search on root:ch-l-m in the Lexham Hebrew Bible and got good results: 34 results on the noun chalom and 14 results on the verb chalam. One quick question, though, even on this: why does the lemma for the verb not have vowel points? We don't want the root to have vowel points, but surely we want verb lemmas to have them. They have them in BDB and HALOT.