I think all piston Helicopters since the B47 have correlators. Most not as effective as the Robinson - really good in the most common flying range - slightly overly effective at other portions of the control movement as mentioned above.
It’s been a long time since I flew a B47, and longer since I flew an un governed R22. I’m getting old, and spoilt by beautiful glass cockpit twins. (I never had to switch a B47 off, and back on again to clear a fault…..)