\begin{table}
\centering
\begin{tblr}[         %% tabularray outer open
]                     %% tabularray outer close
{                     %% tabularray inner open
colspec={Q[]Q[]Q[]},
hline{2}={3}{solid, black, 0.05em},
hline{3}={1-3}{solid, black, 0.05em},
hline{2}={2}{solid, black, 0.05em, l=-0.5},
hline{2}={1}{solid, black, 0.05em, r=-0.5},
hline{1}={1-3}{solid, black, 0.1em},
hline{13}={1-3}{solid, black, 0.1em},
row{8}={}{cmd=\tinytableTabularrayStrikeout},
row{10}={}{font=\bfseries},
row{4,6}={}{font=\itshape},
cell{1}{1}={}{halign=c},
cell{1}{2}={c=2}{halign=c},
cell{1}{3}={}{halign=c},
cell{5}{1}={c=3}{font=\itshape},
cell{5}{2}={}{font=\itshape},
cell{5}{3}={}{font=\itshape},
cell{9}{1}={c=3}{},
}                     %% tabularray inner close
Hello & World &  \\
mpg & cyl & disp \\
21.0 & 6 & 160.0 \\
21.0 & 6 & 160.0 \\
Hello & Hello & Hello \\
22.8 & 4 & 108.0 \\
21.4 & 6 & 258.0 \\
18.7 & 8 & 360.0 \\
World & World & World \\
18.1 & 6 & 225.0 \\
14.3 & 8 & 360.0 \\
24.4 & 4 & 146.7 \\
\end{tblr}
\end{table} 
