Docker & Reverse Proxies

Mooching off this other post

Primary question: What do people do for their reverse proxies (and associated ACME clients)? Do you have a single unified one? Or do you use separate proxies for each stack? Or some mess in between?

My use case question: For example, I have a (mess that is a) Nextcloud instance with a separate stack with nginx and ACME, a SearXng that wants to run caddy (but has shoved into the nginx).

But now I have a Lemmy docker that has a custom(?) nginx instance, should I just port it to my existing nginx or run them side by side?