LaTeX files listing all emoji in Unicode 13.0 by lualatex-dev + luaotfload.sty 3.12 in TeXLive 2019 final. Note that TeXLive 2019 final and TeXLive 2020 include Noto Color Emoji and Twitter Emoji. BXcoloremoji.sty is also needed for compilation.

One can easily use emoji in a presentation by LuaLaTeX like the below. LuaLaTeX can handle color fonts with RawFeature={+colr}

\RequirePackage[TU]{fontenc}
\RequirePackage{fix-cm}
\RequirePackage{lmodern}
\documentclass[luatex,unicode]{beamer}
\usepackage{fontspec}
\setsansfont{Segoe UI Emoji}[
  RawFeature={+colr;+dist;+ccmp},
  BoldFont={Segoe UI Bold},
  ItalicFont={Segoe UI Italic},
  BoldItalicFont={Segoe UI Bold Italic}]
\usetheme{Madrid} 

\begin{document}
\begin{frame}{Test😃}
  Test👍\\
  \textbf{Test}👌\\
  \textit{Test}💕
\end{frame}
\end{document}