Thanks for pushing, @surfyogi! :-)
Yes, typically Sativas are recommended for daytime use, and a more cognitive/creative "mind" high.
While Indicas, as you said, are typically recommended for nighttime use, and a possibly couch-locked "body" high.
But because of all the bastardization of strains (again, as you acknowledged), those recommendations become less meaningful/consistently true. But, it's a simple starting point, I 'spose.
Before I moved to Acapulco, I was SUPER excited to experience the legendary Acapulco Gold -- a Sativa landrace strain. (I believe there are only, like, 9 or so landrace strains throughout the entire WORLD). I asked around for months. No luck. :-(
It's a pity. Pure strains are hard to find, and we're having to settle, instead for "sativa-dominant" and "indica-dominant."
https://www.leafly.com/news/cannabis-101/the-cannabis-origin-what-is-a-landrace-strain