Trees

I remember watching some farmer testing different growing methods in separate plots (couldn't find it again). Permaculture, notill and similar methods work great for small gardens. But try to 3 sister a hectare of land and you'll curse everyone who ever mentioned it to you. You simply can't spend a lot of time on each set of plants to make sure they're actually helping each other instead of for example creating optimal conditions for pests and diseases. That means you get less produce than if you monocropped it.

This is why we need to bring food back locally into everyone’s yard’s and parks

I agree, but I don't think these methods are good for that without extensive support from local "experts". My first real grow was in my apartment, and I had a bunch of cooking herbs, peppers, tomatoes, and other vegetables in 0.5l plastic cups with coco coir. Mixing up the feeding solution taught me about plant nutrition and how to recognize specific issues (too much/little of a nutrient for example). Since the nutrient composition of the substrate changes with every feeding, you can quickly recognize what the plant wants and needs.

If it was living soil, I seriously doubt I'd get anywhere close. You not only need to be really specific when sourcing fertilizer, that you use in ways that require highly specific knowledge, but you also need like 200l beds to get anywhere. And you can get into weird situations like your plants showing N deficiency after you fed N mulch like 2 months ago. The cause can be something really tricky like using mulch with too much cellulose/lignin, and so the microorganisms had to use N in order to later release more of it later on.

I’ve personally drawn a lot of inspiration from Australian indigenous peoples and their approach to land management which is why I feel so strongly about learning soil health.

Check out Koreans. KNF and JADAM have pretty cool methods to feed different levels of soil, organic pest control, and stuff like that. I've even seen KNF used to create pig sties and chicken coops that don't smell.