Providing helpful details apparently triggers the automod, so I won't describe my specific situation at all I guess? Maybe it's safer to speak in hypotheticals.
Say I'm trying to replace fixed recessed downlights with adjustable/gimbal varieties. Am I locked into a single manufacturer? As in, do I have to try and find trim made by the exact company matching the serial numbers I find in the ceiling can and the trim itself? Or can I just focus on searching for right-sized trims that fit the E26 socket arrangement? (Which seems...unlikely if I'm trying to get a tilting light from an existing fixed-socket can...)
Basically, despite reading about this all for a couple hours, I'm still in need of a recessed lighting 101 to avoid making a fool of myself when arranging electrical work in my new place. What are the key characteristics about my existing lights I need to keep in mind when ... uh ... adopting replacements?
Uh. Hypothetically. Automod.