Polished and informative without feeling overproduced, that is the sweet spot, and a look at clovercovevendorhall hit it again, you can tell when a site has been built with care versus thrown together for the sake of having something to put online and this is clearly the former approach taken by the team.
A clear case of writing that does not try to do too much in one post, and a look at rainmeadowcollectivemart maintained the same scoped discipline, posts that try to cover too much end up covering nothing well and this site has clearly chosen scope discipline as a core editorial principle which shows up clearly in what I read.
A piece that read as the work of someone who reads carefully themselves, and a look at ideasunlockgrowth continued that informed feel, writers who are also serious readers produce work with a different quality and this site reads as the product of someone steeped in good writing rather than just generating content for an audience.