I have made a macro to add "Human" and "AI" to papers. Looks good.
\usepackage{tcolorbox}
\tcbuselibrary{skins,breakable}
% Paragraph authorship bars: green Human and blue AI labels in the left margin.
% Usage: \begin{humantext} ... \end{humantext}
% \begin{aitext} ... \end{aitext}
% The body may contain multiple paragraphs, displayed mathematics, or lists.
% Blocks break across pages, repeating the vertical label on each segment.
% Text keeps its normal width; reserve space in the left margin for the label.
% Optional arguments accept tcolorbox keys; redefine HumanBarColor/AIBarColor
% after this file is loaded to customize the colors.
\ifdefined\gappyParagraphBarsLoaded
\else
\newcommand{\gappyParagraphBarsLoaded}{}
\tcbuselibrary{skins,breakable}
\definecolor{HumanBarColor}{HTML}{79CD76}
\definecolor{AIBarColor}{HTML}{70B2FF}
\tcbset{authorship paragraph/.style 2 args={
enhanced,blanker,breakable,parbox=false,
left=8pt,grow to left by=8pt,
before skip=\medskipamount,after skip=\medskipamount,
borderline west={1.2pt}{0pt}{#1},
overlay={\node[rotate=90,anchor=south east,inner sep=0pt,
font=\sffamily\scriptsize\bfseries,text=#1]
at ([xshift=-3pt]frame.north west) {#2};}
}}
\newtcolorbox{humantext}[1][]{authorship paragraph={HumanBarColor}{Human},#1}
\newtcolorbox{aitext}[1][]{authorship paragraph={AIBarColor}{AI},#1}
\fi