The cleanest powder you will find for 9mm, and accurate.
You didn't answer his question, at least not completely. It's Vihtavuori N320, a powder from Finland.
As to how it works, I don't know, it's not available locally, I'd have to order it and pay hazmat on top of it being much more expensive to start with.
If you already knew those loads, why whine about them not being in the Lyman manual? It costs tall dollars to completely test any given powder bullet combo. With all the other powders available, they either elected to not include it, or as I said, it didn't work well for them when tested.