cont…
From this layout @https://www.easy-do-it-yourself-home-improvements.com/3-way-switch-wiring-diagram.html , it appears mine is #9. Here are my current switches and from @[FAQ] GE 3-Way Wiring, mine is probably a line-switch-load-switch-1 or line-switch-load-switch-2
Leviton diagram @ https://ibb.co/yQtg6BV
new_switch_1. https://ibb.co/64VmJkD & https://ibb.co/Ws2SpjC
new_switch_2/remote, https://ibb.co/h2X1xG7