This is a table I used in the paper W. Li, G. Wei, D. Ding, Y. Liu and F. E. Alsaadi, "A New Look at Boundedness of Error Covariance of Kalman Filtering," in IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 48, no. 2, pp. 309-314, Feb. 2018. I would like to share some LaTex codes for the table which might be helpful to some readers.
The subfiles package and class can help with typesetting multi-file projects, where subsidiary files will inherit the main file's preamble when they themselves are compiled (i.e. "set as main" in Overleaf projects.
Note, though, that at present .tex files inside a folder cannot be set as a project's main file.