Heya Bertrand,
The Star Citizen Wiki (https://starcitizen.tools/) would be one of your best bets at seeing a independently hosted wiki that is using CirrusSearch, ElasticSearch 7.10, Semantic MediaWiki and utilising PHP 8.2+, of course they are not using WikiSearch but I'm not sure how mission critical WikiSearch is as compared to CirrusSearch and they are also using MediaWiki 1.39.7 which is only one version above WikiApiary using MediaWiki 1.39.6, however the Star Citizen Wiki utilises Docker and Linode Akamai Kubernetes for their hosting, so hopefully this is a good start maybe?
Sincerely, Aeyeu Weeb | AeyeuWeeb@gmail.com Quantum Science Wiki https://quantumscience.wiki/