The wide
option is here for that. Your options [noitemsep,topsep=0pt]
is equivalent to the shortest [nosep]
. Here are three variants: you can have the left margin of the list coincide with the text left margin (default) or with the beginning of the text of the item:
\documentclass{article}
\usepackage{enumitem}
\setlength{\parindent}{0pt}
\begin{document}
\begin{itemize}[nosep, wide]
\item First Item
\item Second Item
\end{itemize}
\bigskip
\begin{itemize}[nosep, wide=0pt]
\item First Item
\item Second Item
\end{itemize}
\bigskip
\begin{itemize}[nosep, wide, leftmargin=*]
\item First Item
\item Second Item
\end{itemize}
\end{document}
The bullet is by default indented by \parindent
, but you may change it setting wide=some length
.