I'm looking into native sedges right now since they provide a lot of ecological benefit and are better-suited to growing in the soil conditions of my yard.
My idea is that there are two types of lawns. There are the lawn you use, and it is fine to be grass. But there is a lot of lawn that is landscaping and that can be native plants.
It’s not too hard to find in the US. You could buy five pounds of seed [0] right now if you wanted to.
0: https://www.johnnyseeds.com/farm-seed/legumes/clovers/new-ze...
https://www.google.com/search?q=Dutch+white+clover+seed+for+...
The other nice thing is they don't need cutting nearly as often. I only had to cut the lawn because the stray random grasses and weeds that grew among the clovers.