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Big spectrum indeed. (I know you know all this, but I liked to add from here for OP.) I have two grinders, 1Zpresso J-Ultra and Mazzer Omega X Soft Burrs. You can’t go dead slow on a hand grinder anyways, you need muscle through it and try to keep a reasonable rpm. In my J-Ultra some dark roast are

You can get an mhw R3 or 1zpresso J series But hand grinding for espresso is painful, best to go electric and get a Hibrew g5 or Baratza encore esp You can use the flair to brew something called soup, that is great for light roasts

The first grinder I got was a manual 1zpresso J or K series, I can’t quite recall anymore - my argument was spend the money on the burr and save money on the motor instead? It worked pretty well, but as soon as you’re making an espresso with a light roast for more than 2 people it gets to be a prett

Exactly my setup, but moved to an electric grinder now - grinding light roasts with the 1ZPresso was killing me 😅 Oh and I have the regular NanoFoamer instead of the pro. Have you tried the regular one, how did it compare for you if so?