> Don't forget about SRFI-97 which has R6RS library names for many SRFIs:
>
>    https://srfi.schemers.org/srfi-97/srfi-97.html
>
> E.g. (srfi :1 lists).

These names:

>> (srfi 1 lists)       ; de facto R6RS library-name

Come from there. I neglected the `:` in my example.

> SRFIs that came afterwards may or may not have consistent naming of
> their implementations.

They do now. Please see the current `library-name` field in
<https://github.com/scheme-requests-for-implementation/srfi-common/blob/master/admin/srfi-data.scm>.
It was seeded from SRFI 97. The library names for SRFIs published after
SRFI 97 were seeded from chez-srfi. That work was planned here:
<https://github.com/arcfide/chez-srfi/pull/37> and there should be some
related issues/PRs in srfi-common as well. chez-srfi now has an
auto-updater to get new names from srfi-common:
<https://github.com/arcfide/chez-srfi/blob/master/private/registry-names-update.sps>.

So the de facto R6RS library names are now SRFI 97 + whatever
library-name says in srfi-data.scm

It can be that some R6RS implementations actually use different names
currently, but at least there's now an official protocol and it's
followed by chez-srfi.