I like caddy, but the dreamhost benchmark re apache vs nginx isn't really telling, as it doesn't mention fundamental apache config properties. I'm assuming they were benchmarking an unoptimized MPM/prefork setup, but you can use event-based request processing (and other process models) with apache as well. There's nothing magical with nginx.

I'd also like to see a benchmark vs. H2O which seems to have the most advanced HTTP/2 support right now (its running the nghttp2 web site for some time now).