What the letters mean
Crop letters follow the potato-salad line. Weapon letters follow published damage or a described role. The melee weapon ranked above the pumpkin hammer was not named, so nothing is placed in S for weapons.
Rankings
Islands Reborn (🏭Factory Update) crops rankings from S through D. This is an editorial board from published topics, not a live meta snapshot.

Islands Reborn is a fan-made Roblox recreation of classic 2020-2021 Islands by !Project Reborn. This wiki covers the starter island, potato salad, Factory Update machines, combat keys, shops, and the two official badges.
Crop letters follow the potato-salad line. Weapon letters follow published damage or a described role. The melee weapon ranked above the pumpkin hammer was not named, so nothing is placed in S for weapons.
No. After you chop a tree you plant the seed again.
No list of working reward codes was found for this experience. A code from the original Islands game, or from another experience with a similar name, is not a reward here.
A visit code opens a player island. It does not grant coins, crops, or equipment.
The experience page says perks use the original Islands gamepasses by Easy.gg. Islands Reborn does not sell those passes, and buying one supports the original developers.
The Roblox catalog for universe 10678510075 lists two enabled badges: Welcome To Islands Reborn and 1M Coins.