A post mortem biography would be one way of describing it.
It is called an obituary, sometimes abbreviated to obit.
An extract
A summary is a short version of a piece of writing. A report will have an abstract which summarizes the contents. Or better - precis (pronounced pray-sea)
We consider essay as a piece of writing.
The meaning of literary research could apply to a couple of different things. Someone could do research while they are writing a piece of literature, or someone could be prompted to do research after reading a piece of literature.
It is called an obituary, sometimes abbreviated to obit.
Satire
A speech or piece of writing praising something is called a eulogy or tribute. It is a formal expression of admiration, reverence, or appreciation for someone or something.
An obituary is what is published in a newspaper after a famous person's death.
An unreadable piece of writing is often referred to as illegible or unintelligible.
Refine
transactional writing is a piece of writing that informs or persuades someone to do something e.g a letter, a recipe ect.
That would be called an "essay".
An extract
blah blah blah bye
citation
The next to last sentence in a piece of writing is called the penultimate sentence.