After tweaking a bit this answer by user using the tocloft package, here is what comes.
You can create two lists \listchaptersbyA and \listchapterbyB which will hold all the chapters authored by authors A and B.
Call \chapterbyA or \chapterbyB after a \chapter to state that this chapter was authored by the specific author.
List these chapters by calling \listofchapterbyA or \listofchaptersbyB
\documentclass{book}
\usepackage{lipsum}
\usepackage{tocloft}
\usepackage{hyperref}
\usepackage[english]{babel}
\hypersetup{colorlinks=true}
\newcommand{\listchaptersbyA}{Authored by A}
\newlistof{chaptersbyA}{cbA}{\listchaptersbyA}
\newcommand{\chapterbyA}[0]
{%
\refstepcounter{chaptersbyA}
\addcontentsline{cbA}{chaptersbyA}
{\protect\numberline{\thechaptersbyA}\chaptername~\thechapter}\par
}
\newcommand{\listchaptersbyB}{Authored by B}
\newlistof{chaptersbyB}{cbB}{\listchaptersbyB}
\newcommand{\chapterbyB}[0]
{%
\refstepcounter{chaptersbyB}
\addcontentsline{cbB}{chaptersbyB}
{\protect\numberline{\thechaptersbyB}\chaptername~\thechapter}\par
}
\begin{document}
\chapter{1st chapter}
\chapterbyA{}
\lipsum[1]
\section{A section}
\lipsum[1]
\chapter{2nd chapter}
\chapterbyA{}
\chapterbyB{}
\lipsum[1]
\section{A section}
\lipsum[1]
\chapter{3rd chapter}
\chapterbyA{}
\lipsum[1]
\newpage
\listofchaptersbyA
\listofchaptersbyB
\end{document}
