How to set globally the label of enumerate and enumerate*?

Question

in my document I have 2 types of enumerate lists. I use enumerate for lists like:

1. Item

2. Item

3. ...

And enumerate* for lists like:

(a) Item, (b) Item, (c) ...

I set globally the enumerate using \setlist[enumerate]{label=\bfseries\arabic*.} but I can't set globally the enumerate* using \setlist[enumerate*]{label=\bfseries(\alph*)}. How can I set globally the enumerate* environment label?

Extra question: How can I set globally enumerate* for to add automatically a comma after every item and the word "and" before the last item?

\documentclass[12pt,a4paper]{article}
\usepackage{blindtext}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage[inline]{enumitem}
\setlist[enumerate]{label=\bfseries\arabic*.}
%\setlist[enumerate*]{label=\bfseries(\alph*)}
\begin{document}
\begin{enumerate}
\item Item 1
\item Item 2
\item Item 3
\end{enumerate}

\begin{enumerate*}
\item Item 1
\item Item 2
\item Item 3
\end{enumerate*}

\begin{enumerate*}[label=\bfseries(\alph*)]
\item Item 1
\item Item 2
\item Item 3
\end{enumerate*}
\end{document}

Answer 1

The key itemjoin sets the format for in between the items, while the key itemjoin* sets the format for before the last item, overriding the itemjoin setting.

In order to keep the displayed list numeric while the inline list alphabetical, you would have to create a new list, as the \enumerate and \enumerate* environments share the same settings.

\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{enumitem}
\newlist{inlinelist}{enumerate*}{1}
\setlist[inlinelist]{label=\bfseries(\alph*), itemjoin={{, }}, itemjoin*={{, and }}} % <-------------
\setlist[enumerate]{label=\bfseries\arabic*.}

\begin{document}
    \begin{enumerate}
        \item Item 1
        \item Item 2
        \item Item 3
    \end{enumerate}

    \begin{inlinelist}
        \item Item 1
        \item Item 2
        \item Item 3
    \end{inlinelist}

    \begin{inlinelist}
        \item Item 1
        \item Item 2
        \item Item 3
    \end{inlinelist}
\end{document}