Ctrl+P was taken from Sublime, which in turn took that from TextMate. I think.
VSCode and Atom are essentially just Sublime Text with Javascript instead of Python as the plugin language. Also, IntelliJ has had this for quite some time, though it doesn't meet the criteria for light weight text editor, it is certainly better than Eclipse.
I am not aware if that feature is available in other editors, I tried light table for a short time, but it isn't getting much attention since they are working on some other product. ctrl +P transformed the way i write go code, now I dont' have to bother to remember which file stored what, just ctrl +P function name, as i know what all functions I am using or I can just scroll!