Most of the current core blockchain devs don't post onchain, so I'm generally summarizing their work right now. It's also possible to follow their work on gitlab on any given day using this link: https://gitlab.syncad.com/groups/hive/-/activity
Unfortunately that only shows a day's worth of history. But it will give you the names of the devs, so you can then see their activity by following those links, like this one:
https://gitlab.syncad.com/bwrona