\documentclass{article}
\usepackage{biblatex}
\addbibresource{test-cites.bib}

\begin{document}
\begin{enumerate}
  \item \autocite[10]{Hemingway1940}
  \item \autocites{Hemingway1940}{JiM2020}
  \item \autocites[10]{JiM2020}[20]{Hemingway1940}
  \item \autocites[10]{Hemingway1940}{JiM2020}
  \item \autocites{Hemingway1940}[20]{JiM2020}
\end{enumerate}

arXiv tests: \textcite{0801.1144} and \textcite{wilcox.e:2021}

\end{document}
