My default profile has bulging corners but almost no visible ringing, but I'm happy to run some tests for you with more aggressive settings. (Looking forward to the new motion planner!)
Can you give me a table of test values you'd like to see? For reference, I'm on a CoreXY with a default profile of 180 jerk, 3600 accel, 60mm/s external perimeters. With these values, I have no observable ringing on the X-axis, and (if I squint hard and use a flashlight) 0.6mm wavelength on the Y for an 0.01s period, assuming it was up to speed at that point.