Happy to provide a few more suggestions! Hybrid bikes are a great way to get the best out of both worlds. Something you might consider as well is a stem raiser. This can help you elevate the handlebars changing the geometry up a bit and hopefully putting less pressure on your back. The higher you can get the handlebar the less aggressive riding position you’ll be in.
Here are a few hybrid considerations:
Here is a link to a stem raiser as I mentioned too:
If you decide to go with a raiser it may involve a few other bike alterations but could ultimately get you on a bike you really like!