The HPACK ( header compression for HTTP/2 ) static table:
The static table was created from the most frequent header fields used by popular web sites, with the addition of HTTP/2-specific pseudo-header fields (see Section 8.1.2.1 of [HTTP2]). For header fields with a few frequent values, an entry was added for each of these frequent values. For other header fields, an entry was added with an empty value.
Here is a direct link to the list. I like number 16, accept-encoding: gzip, deflate, even though that means this won’t be usable with Brotli.