MFC was Microsoft, so that was definitely native, and I think a lot of stuff used native even just for performance reasons. I remember getting very frustrated around then when something would want me to install the JVM and I knew I was in for a laggy mess of an application that would have bad font rendering, strange little buttons, and its own file picker.
Don't modern versions of Windows contain at least 5 different widget frameworks? Like, Win32, Ribbon (I think engineered for Office as you said), WinForms, WPF, WinUI 1/2/3... I think Apple just has Cocoa (Carbon is long gone), AppKit, UIKit, and SwiftUI.
