zhwiki and jawiki because of T219533 and kowiki because of T216738
Per @EBernhardson new models are automatically built and shipped to prod, they just need to be tested
Testing consists of running AB tests
First, deploy a config patch, see example here: https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/537637/4/wmf-config/InitialiseSettings.php. This will wrap the config object with our custom values. The new models also need to be added to wgCirrusSearchMLRModel in that same InitaliseSettings.php file.
then, turn on the AB tests, example here: https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/WikimediaEvents/+/537639/3/modules/all/ext.wikimediaEvents.searchSatisfaction.js