I'll give you some examples from Giant bikes. Every decent manufacturer will have an equivalent bike that I'm showing (Brodie, Devinci, Specialized, etc). So the actual manufacturer doesn't matter a ton. Giant does have a good price point though, sometimes better than others.
Rule #1 get disc brakes
Rule #2 don't go too cheap
Rule #3: I wouldn't get anything cheaper than Shimano Sora. I strongly recommend Shimano 105 as the sweet spot for reliability, cost and effectiveness. Of course the more you ride, the easier it is to justify. I'm not sure what the SRAM equivalents are.
Fitness. Comfortable and a bit sporty:
https://www.giant-bicycles.com/ca/bikes-fastroad-slEndurance. Faster, more comfortable than a race bike, the Defy Advanced 3:
https://www.giant-bicycles.com/ca/bikes-defy-advancedGravel. More all-rounder, the Revolt gravel bike. Still pretty fast, a bit cheaper than a Defy, comfortable, better for wet weather because fenders will fit on it better, can use off-road:
https://www.giant-bicycles.com/ca/bikes-revolt-2021I have several types of bikes, I've been using a bike similar to the Fastroad (but with an internal gear rear hub) for commuting for the past 8 years. If I were to get a new bike, I would get a gravel bike for winter riding, commuting, and some off-road rides.