Hibernate Search is a fully supported component of Red Hat JBoss EAP as part of the Red Hat Runtimes offering. Using JBoss EAP, Quarkus, Open Liberty or Spring Boot? They are all part of Red Hat Runtimes.
Red Hat Data Grid also uses a custom edition of Hibernate Search internally to provide high performance full-text queries and data mining on the data grid.
Several more products from Red Hat are powered by Hibernate Search.
If you are interested in Hibernate Search support/consulting within these runtimes, please contact Red Hat!