> Just giving them hostnames is easier
Bitwarden annoyingly ignores subdomains by default. Enabling per-sudomain credential matching is a global toggle, which breaks autocomplete on other online service that allow you to login across multiple subdomains.
You can override the matching method on an individual basis though, just using the setting button next to the URL entry field.
Tell me about it... that infinite Ctrl + Shift + L sequence circling through all credentials from all subdomains. Then you brain betrays you making you skip the right credential... ugh, now you'll circle the entire set again. Annoying.
You can set that globally but override at the individual entry.
Seriously? That sounds incredibly awful - my keepass setup has dozens of domain customizations, there's no way in hell you could apply any rule across the entire internet.