main_text.tex

\documentclass[10pt,a4paper]{article}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}

\usepackage{blindtext}


% Load required table packages
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{float} % Need if posotion of table needs float
\usepackage[flushleft]{threeparttable} % Need flushleft to put "Note" to the outer line. Tablenotes are generated by the tablenotes command

\begin{document}

\blindtext

\renewcommand{\arraystretch}{1.5} % Default value: 1
\input{myTable1.tex}
\blindtext

%\renewcommand{\arraystretch}{1.5} % Default value: 1
\input{myTable2.tex}
\blindtext

\renewcommand{\arraystretch}{1.5} % Default value: 1
\input{myTable3.tex}
\blindtext

\renewcommand{\arraystretch}{1.5} % Default value: 1
\input{myCustomTable.tex}
\blindtext

\end{document}