Sounds like a touring bike would fit the bill for you. They can be pretty sporty and fast (though not racers), yet have rack braze-ons and their brakes and forks can handle slightly wider tires. They also tend to have a wider gear range which is handy for touring over hilly terrain. Touring bikes can do just about anything a hybrid bike can do- but in general they tend to be lighter weight (unloaded), and way more comfortable for distance riding.
In my humble opinion, you'd do well with a bike with rack braze-ons, drop bars, and the ability to handle a 25 to 28 mm wide tire.
Jumping on/off gravel shoulders would be hard on very skinny racing tires.
But you could do it just fine on puncture-resistant or Kevlar belted 700 x 25 tires or even 28's. Those tires are not unduly heavy and wide, but are way tougher than racing 23's. You wouldn't believe the sharp grueling gravel I routinely grind over on my flat-resistant 700 x 25's. Yet they don't look that fat and don't weigh a lot like knobbies.
I agree that with your longer riding drop bars (the curvy ones) are definitely in order.
If you have a small rear rack that you can put a medium saddlebag on, I suspect you will be vastly relieved to not have a backpack hanging on your back for hours at a time.
All of the above is just one person's opinion- others will likely give you different great advice too.
Congratulations for taking the new step! And smart of you to carefully plan what you need.![]()