Find a shop that is willing to help set up your riding position when you buy a bike. You can start with most any bike and add spacers to the headset to raise the stem (if the fork steer tube is not cut short), and/or add a different stem with steep rise instead of a flat or shallow rise stem. It also helps to use shallow drop bars (like 125-130mm drop) so that the riding position while on the drops is not so low, encourages more use of the drops rather than just staying on the tops 100% of the time.
Pay attention to the height difference between the handlebars and the seat. A high bar position would have the tops of the bars nearly level with seat. More drop from seat to bars is a faster and more aggressive riding position, more suitable for smooth riding but you likely will be better able to handle rough riding better if the bars are high and give you better control.