These are some of the most influential authors that have contributed greatly to my understanding of radio and AC Theory in general.
Jeff Anderson (K6JCA)
https://k6jca.blogspot.com/search/label/Quarter-wave%20Transformer
https://k6jca.blogspot.com/2021/10/revisiting-maxwells-tutorial-concerning.html
David Knight (G3YNH)
Steven Best (VE9SRB)
Walter Maxwell (W2DU)
Ward Harriman (AE6TY)
Misc other authors (there have literally been hundreds)
Lloyd Butler (VK5BR): http://users.tpg.com.au/users/ldbutler/MeritsOWLine.pdf
Bill Leonard (N0CU): http://www.na0tc.org/lib/exe/fetch.php?media=technical:balun_p2_website.pdf
Larry Benko (W0QE): https://www.w0qe.com/SimSmith.html
Lucia A. Lorona (W6WQC): Antennas and Feedlines
Rick Westerman (DJ0IP): https://www.dj0ip.com/
Owen Duffy (VK2OMD): https://www.owenduffy.net
Tom Rauch (W8JI): https://www.w8ji.com/
Articles of great importance
Steven Best's publications in QEX Magazine
QEX_Jan_2001_Wave Mechanics of Transmission lines, Part1_Equivalence of Wave reflection analysis and the transmission line equation
QEX_Jul_2001_Wave Mechanics of Transmission lines, Part2 Where does reflected power go
QEX_Nov_2001_Wave Mechanics of Transmission lines, Part3, Power Delivery and Impedance matching