I think the current anti stealth capabilities are not clear, countries that use anti stealth radar are not talking about the capabilities, e.g. what does "The superior stealth target tracking capabilities ensure optimal performance in demanding littoral environments." mean

https://www.thalesgroup.com/en/netherlands/news/new-fire-con...

or "Within this enormous range it detects a wide spectrum of targets: air breathing targets, stealth targets and ballistic missiles."

https://www.thalesgroup.com/de/smart-l-multi-mission-radar-0

or "It is also claimed to be highly capable of detecting stealth targets"

https://en.wikipedia.org/wiki/S1850M