You’re definitely not overthinking it imo. 50mm rake sounds a bit extreme for a gravel bike. I’d got 47mm. With a HT angle around 72.3 or so.
Huh, that is interesting. Does that come from test riding bikes, comparing geometry, or changing forks? Personally, I can't tell the difference in a couple of MM. Takes about 5mm for me to really feel anything different. But rake by itself means nothing.