You could use an app like BetterSnapTool or Tiles. With both, you can set up Aero Snap-like hot edges to change window size. With BST, you can also set right or middle clicking on the traffic lights to do custom actions, including Windows-style maximise.

The odd few times I need Windows-style maximise, usually in non-native apps that don't properly support AppKit/UIKit resizing behaviour (I'm looking at you, Teams, Discord, etc.), I'll use Tiles to do it. Free app.

https://folivora.ai/bettersnaptool

https://freemacsoft.net/tiles/

Hold option (alt) and click the green button in the bar at the top of the window.

(As you hover the button, a pop-up will appear, calling the option "Zoom," which means to "maximize.")

It really means "tell the app to size its window to fit the content" so the effect is not always to fill the screen. It's so inconsistently implemented that they might as well just make it work like maximize on Windows.

Or just double click the titlebar, less effort.

I have been told multiple times, "there's no reason anyone would want to do that." Totally nuts.