According to Wikipedia:
Munkar: Munkar, (مُنْكَر), literally means 'denounced'. According to
Ibn Hajar, if a narration which goes against another authentic hadith
is reported by a weak narrator, it is known as munkar. Traditionists
as late as Ahmad used to simply label any hadith of a weak reporter as
Shādhdh: Shādhdh, (شاذّ), ...
The short answer is it depends, but generally speaking not authentic.
The definition of a hadith mursal is that the tābi'i (Arabic: التابعى), which is the generation after the companions of the Prophet ﷺ starts a narration with: "The Prophet ﷺ said ... ." It is a type of hadith maqtū' (severed chain of narration), at the companion's level.
It is hadith that is not sahih itself, but has some doubt because of which it is Hassan (like maybe one of the narrators is truthful but is said to have poor memory).
However there exists another Hassan or Sahih hadith with different sanad that says the same. Because of the existence of this other sanad we can be sure of the authenticity of the hadith.
About any hadith collection that has been entitled al-Musnad المسند or al-Mo'jam المعجم meets the desired conditions.
As Musnad means a book arranged in chapters or sections that quote ahadith of the same Sahabi () with no special order.
And a Mo'jam is about the same but the arrangement is in an alphabetical order, but it must not necessary be for the ...
I found an upper bound for the amount of ahad hadiths of both sahihs in a statement of ibn Hajjar al-'Asqalani (in his book called al-Madkhal fi osol al-Hadith المدخل في أصول الحديث) saying it is around 200 hadiths, commenting a "False" statement of al-Hakim:
وقد رد عليه الحافظ حجر بقوله :
... "وأما قوله : إن الغرائب الأفراد ليس في الصحيحين منها شيء ، ...
Disclaimer. Since this question is three questions in one (1. what is tadlīs and its types, 2. what is the ruling of a hadith with tadlīs, and 3. what is the ruling of a person who practiced tadlīs), the answer below will scratch the surface of each topic. If you need to get more details about a specific topic, please post a separate question.
After some further investigation (with input from the comment above), here are my preliminary results.
Muslim Scholars Database
People currently working on computational hadith analysis:
Irene Kirchner, PhD student at Georgetown University
Mairaj Syed, professor at UC Davis
Others not listed that are included from the papers below
The word Shadh in Arabic means irregular, abnormal or unnatural.
What you stated is correct. Generally in hadith, Shadh is describing a hadith of a trustworthy person that contradicts the narration of a person who's more reliable.
This is what all scholars agree with. Some have added that it contradicts a narrator who's more reliable and has a better ...
The Scholars of Hadith differed over the meanings of the classifications of Hadith. However, what is generally meant by Munkar is that 1. the Isnad is weak, for example there may be a break in the Isnad or one of its narrators lost his memory and 2. the meaning of the Matn opposes something more authentic than it which is established.
Mudtarib refers to ...
Ajarhu Wa Ata'deel ( الجرح و التعديل ) is a science of the sciences of Hadith, dealing with identifying the narrators whether they are reliable or not. Ajarh/الجرح is finding a deficiency whether it is in his righteousness (عدالته) or in his accurateness (ضبطه), or in both. Of the deficiency is in his righteousness then the Hadith would fall under Mawdu' (...
It is part of Hadith sciences and anytime you read a classification of a Hadith someone has made checks on the narrators etc. (one known having done that is Imam Hanbal for example).
A narrator must be righteous/upright and accurate (in memory or in writing)... any narrator lacking in one or both of these areas is considered having deficiency as a narrator. ...