On the Dorico release page for version 6.2, I instinctively clicked on the Show / Show in parentheses buttons in the Repeats section to see what the different styles look like. To my (expected) disappointment, it was merely a static, non-interactive image.
For this reason, I’ve created a small mockup site that lets you click away on all the different repeat parentheses options, so you can satisfy all your repeat parentheses needs while you wait for Dorico 6.2 to finish downloading. I hope you enjoy it 