Simply install the mod and run the /odc add command while holding the item you want other types of that item to convert to and all items of that type that enter a player's inventory will turn into the specified type.
Also available is a conversion block for automated conversions. Item conversion can be configured to only occur on a keypress.
Conversion Config Format (for pack makers):
# to convert all items from a tag to a specific item (eg. forge:ores/iron=minecraft:iron_ore)
namespace:tag=modid:item
# to convert one specific item to another (eg. minecraft:diamond>minecraft:netherite_ingot)
modid:item>modid:itemProject members
MattDahEpic
Developer