When we check the hadith literature we may find out that commentators in first place focussed on the two sahihs and al-Muwatta' for which one may find much more than ten known (or famous and printed) commentaries, when we move to the so called sunan-books (sunan ibn Majah, abi Dawood, an-Nasa'i) and Jami' at-Tirmdhi we may find less commentaries (explaining in first place the meaning of the hadith content and maybe addressing it's chain etc.) and often the commentators rely on comments of either the sahihs or al-Muwatta'. However I think that one of both sunan books of an-Nasa'i we find out that the book which was (more?) commented is rather his as-Sunan as-Sughra (the small sunnan) than as-Sunnan al-Kubra (the big sunnan).
Of course many efforts and books have surely disappeared or have not yet been printed! So we may miss a lot of the efforts of early scholars.
My question is are there any known commentaries on other books - not single ahadith from one of these books or different sources--(Examples to make a kind of focus) like:
Musnad ad-Darimi which would complete the 9 sunnan books (minimum requirement) and
At-Tabarnis three encyclopaedias (al-Majma' as-Saghir, al-Majma' al-Awsat, al-Majma' al-Kabir)
al-Mustadrak of al-Hakim
as-Sunan al-Kubra of al-Bayhaqi
Musanaf ibn Abi Shaibah
which might also be rather known. There of course much more books which are more or less known like the musnad's of a-Shafi'i, abu Hanifa many books of ibn abi Donya and ibn al-Mubarak.
If there are not it would be nice if you could provide an explanation why this is the case?
To clarify even more because the amount of half answers of @Harun gets more and more lengthy: What I'm not looking for are books:
- like Mashariq al-Anwar of Qadi 'Iyad which is a commentary on specific arguable ahadith from al-Muwatta' and the two Sahihs (because it is not a commenatry on one single book).
- Commentaries on "Ahadith compilations from other books": Like The 40 Ahadith or Riyadh as-Saliheen of imam an-Nawawi or at_Targheeb wa at-Tarheeb of imam al-Mundiri and similar books. (Because these books refer to earlier sources and I want commenatries on original hadith sources).
To give the other case more of a focus: An answer would be satisfactory if you could at least provide some titles commentaries (more on the content) of Musnad Ahmad and Sunan ad-Darimi anything else would be a bonus.