@f0fe8ed3 You should also be aware of the research done by New Relic in this area (e.g. https://newrelic.com/resources/report/2022-state-of-java-ecosystem) - it is based on direct reporting on telemetry that their customers send to them and is *not* self -reported. It also has a very large sample size (10s of millions of production JVMs).

Feel free to DM me if you want more details or an introduction to folks there who may be able to provide you with a more up-to-date dataset.