>>59005218Technically, everything in Gen 3 except the Premier Ball and Dive Ball. If/when they release RSE those can be transferred in, but they're not obtainable without RSE. Few asterisks, though
>Only the Kanto Balls are available for most of the game>Net Balls can only be obtained as hidden items in a few places throughout the Sevii Isles, and (recurringly) on Treasure Beach>Nest Balls can only be obtained in a few places throughout the Sevii Isles, and from catching a large Heracross and showing it to a guy in a house outside of Pattern Bush>Timer and Repeat Balls can be purchased, but only after completing the post-game Sevii Island quest and giving the Sapphire to Celio>Luxury Balls can only be obtained from Selphy at Resort GorgeousSo while all of them except the Premier and Dive ball are *technically* available, you're going to have a hard time actually getting them in large numbers aside from the original Kanto balls and the Timer/Repeat Balls.
>>59005415The don't show up as shiny until you view them in your party. Just checking them before selecting them doesn't generate the Pokemon, and even if it did, it wouldn't show them as shiny. I hope you're actually picking the Pokemon and not wasting your time, FRLG isn't HGSS.