How to rename some of the maps that Cartographers sell in the Villager Trading Rebalance (1.21)

I'm making a skyblock map and I want cartographers to sell maps to the bounding boxes of different structures so the player can find them even though there aren't any blocks. So far, I've found a couple different ways to make maps to point to whatever structure I want (by adding the structure to the on_trial_chambers_maps file in tags/worldgen/structure or by changing the start pool of the default structure), but I'm running into two problems. First, if possible, I'd like to make structures show up on the maps that were added in the Villager Trading Rebalance, like Savanna Village maps, but just adding the data from the rebalance pack into my minecraft folder isn't working. Like just adding on_savanna_village_maps to the same folder as on_trial_chambers_maps and adding a structure to it doesn't seem to be changing anything Second, I need a way of making cartographers sell trial chamber maps that have been renamed based on the structure they really point to, so like giving it a custom name that says "Nether Fortress Map" or something. I can make the map point to the structure, but I can't figure out how to use Misode or anything to generate a map with a custom name as part of a villager trade. I could maybe change the lang file, but I wanted to check if there's a better way. I'd also like to be able to add Buried Treasure maps to the cartographer's trades, especially if I can't get the Villager Rebalance maps to work, because that would mean I only have four map types to work with including treasure.