The pathway approach works, but I'd push back a little on making it *too* intentional-looking. The whole point is to signal that this is deliberate wildflower habitat, not neglect, so yeah - keep your edges clean and mow strips if you want - but don't overthink the geometry. Nature doesn't grow in perfect lines anyway. What matters more is giving plants time to flower before you cut. If you mow in early spring and then leave it alone until late summer, clover and native wildflowers actually get a chance to set seed and spread. You'll get better results that way than if you're constantly maintaining neat borders.
One thing that really helps: mow at different times in different zones. Your main pathways can stay short year-round, but the main pollinator area? Let it grow for at least three to four months without touching it. This lets everything bloom in sequence - early spring stuff, then summer flowers, then fall bloomers. You avoid that dead zone where nothing's flowering because you cut everything back in June. The mess people worry about is usually just a few weeks of "wildness" while everything's getting established. After the first year it looks deliberate, not abandoned.
And don't fight the dandelions and clover like they're weeds. They're some of the best early food sources. If you really can't stand certain invasives creeping in, you can spot-treat by hand or let specific areas grow while managing others, but the blanket herbicide approach defeats the whole purpose. Your lawn will look different, sure, but that's actually the goal - it becomes a functioning mini-habitat instead of a sterile monoculture.