Currently only wikidatawiki and enwiki seem to be 'active'.
Snippet of https://dumps.wikimedia.org/backup-index.html:
2021-08-01 10:48:50 cswikinews: Dump in progress
2021-08-01 10:48:49 in-progress Redirect list cswikinews-20210801-redirect.sql.gz
2021-08-01 10:48:49 azbwiki: Dump in progress
2021-08-01 10:48:48 in-progress Interwiki link tracking records azbwiki-20210801-iwlinks.sql.gz
2021-08-01 10:48:50 hywikibooks: Dump in progress
2021-08-01 10:48:49 in-progress Name/value pairs for pages. hywikibooks-20210801-page_props.sql.gz
2021-08-01 10:48:46 aywikibooks (closed): Dump in progress
2021-08-01 10:48:45 in-progress List of pages' geographical coordinates aywikibooks-20210801-geo_tags.sql.gz
2021-08-01 10:48:49 kkwiktionary: Dump in progress
2021-08-01 10:48:48 in-progress Redirect list kkwiktionary-20210801-redirect.sql.gz