Sweetlix Meat Maker is the best available goat mineral out there and highly recommended by many successful breeders. Purina Wind & Rain is also a good one. Manna Pro is easy to find, but you have to do a lot of supplementing with it. Do make sure that you put out free choice loose minerals, blocks are harder for them.
A loose mineral is important. For goats, a mineral block is just a fun thing.
I like adding a bit of kelp trace minerals on occasion.
Also... you will need to research your area...
Where I am there is close to zero copper or selenium.
So my goats, in addition to the loose minerals, needed a copper bolus about every 6 months, and they also needed a paste once a month that had a mix of stuff including selenium.
But... other places don't need copper or selenium.