Disclosure: I work for AWS where I build infrastructure services that sit low in the stack. I am a relative novice when it comes to Java-heavy codebases like Apache Lucene, Elasticsearch, or OpenSearch. But I know a thing or two about Open Source and Communities.
I think it is hazardous to count the number of committers and PMC members that are part of a project that is built at the Apache Software Foundation. It is helpful to keep track of these things to make sure that the project keeps its independence, and is not unduly influenced by the interest of any one company or organization. Committers and PMC members earn their position based on their own efforts as individuals. They don't represent their employers.
The current Apache Lucene PMC chair just happens to work for Amazon today. A number of folks that used to work for Elastic now work at Amazon. But over-focusing on that, and keeping careful track of what company contributes how much to ASF projects, is bad for community health in my personal opinion.
See also Doug Cutting at https://twitter.com/cutting/status/1359160158723711002