The thing with ML4W is that by screenshots it looks like any other desktop environment with overlapping mess of differently sized windows. While Omarchy pushes the tiling manager aspect.

It's not. It's 100% tiling by default and functions the same way as Omarchy's spin. However, the developer did make a couple of setting app GUIs that are pop-up focused. I think the screenshots emphasize those, which makes it look less tiling than it is.