Linux

I have a very unusual workflow. In addition to not stacking windows, I don't minimize them either. Instead, I spread them out over many workspaces. Per workspace, I usually only have 1 or 2 windows, but I 'group' workspaces to keep semantically related windows together.
And I do that, by having all workspaces in a column and just placing windows in neighboring workspaces + leaving workspaces empty between the groupings. I also have a minimap for my workspaces in my panel, to just keep track of all of this.

I like this workflow a lot, because it maps semantics to location. It feels like a desk where you just place related documents next to each other and might place some documents more in the middle, others in a faraway corner.

This is in contrast to the traditional Windows workflow or the workflow that many tiling folks use, where the first workspace is for web browsing etc..
Those use groupings based on the kind of task you do in them (often effectively being tabs in an application), like web browsing. They don't group by the topic, e.g. you might frantically research ants and use a separate browser window, separate text editor etc., all grouped up for ants.

Now, traditional use of workspaces does allow this grouping by topics, by just assigning each workspace a topic. But personally, I found that too static.
Like, yeah, I have some larger, completely distinct topics, but often I'll just quickly research bees and that's kind of ant-related, but doesn't need to be fully mixed with that either. I'd rather just place it to the side of the ant stuff.