Turns out I have a half done blacklist for a similar purpose:
[tt][
{
“type”: “ITEM_BLACKLIST”,
“items”: [
“mutagen”,
“mutagen_plant”,
“mutagen_insect”,
“mutagen_spider”,
“mutagen_slime”,
“mutagen_fish”,
“mutagen_rat”,
“mutagen_beast”,
“mutagen_ursine”,
“mutagen_feline”,
“mutagen_lupine”,
“mutagen_cattle”,
“mutagen_cephalopod”,
“mutagen_bird”,
“mutagen_lizard”,
“mutagen_troglobite”,
“mutagen_medical”,
“purifier”,
“mutagen_chimera”,
“mutagen_alpha”,
“mutagen_elfa”,
“mutagen_raptor”,
“iv_mutagen”,
“iv_mutagen_plant”,
“iv_mutagen_insect”,
“iv_mutagen_spider”,
“iv_mutagen_slime”,
“iv_mutagen_fish”,
“iv_mutagen_rat”,
“iv_mutagen_beast”,
“iv_mutagen_ursine”,
“iv_mutagen_feline”,
“iv_mutagen_lupine”,
“iv_mutagen_cattle”,
“iv_mutagen_cephalopod”,
“iv_mutagen_bird”,
“iv_mutagen_lizard”,
“iv_mutagen_troglobite”,
“iv_mutagen_alpha”,
“iv_mutagen_medical”,
“iv_mutagen_chimera”,
“iv_mutagen_elfa”,
“iv_mutagen_raptor”,
“iv_purifier”,
“fetus”,
“arm”,
“leg”,
“taint_tornado”,
“bio_tools”,
“soldering_iron”,
“amplifier”,
“circuit”,
“plastic_chunk”,
“power_supply”,
“chemistry_set”,
“RAM”,
“processor”,
“laptop”,
“burnt_out_bionic”,
“battery_atomic”,
“UPS_off”,
“lgpistol_primer”,
“lgrifle_primer”,
“shotgun_primer”,
“smpistol_primer”,
“smrifle_primer”,
“bio_advreactor”,
“rx12_injector”,
“spring”,
“e_tool”,
“jar_glass”,
“jar_3l_glass”,
“bio_reactor_upgrade”,
“bio_reactor”,
“motor_small”,
“motor_large”,
“duct_tape”,
“antenna”,
“element”,
“hose”,
“battery_compartment”,
“can_food”,
“can_drink”,
“lobotomizer”,
“jerrycan”,
“jerrycan_big”,
“30gal_drum”,
“iodine”,
“yeast”,
“disinfectant”,
“55gal_drum”,
“cvd_machine”,
“gasoline”,
“diesel”,
“exploding_arrow_warhead”,
“plut_slurry”,
“modularvest”,
“plut_slurry_dense”,
“canister_empty”,
“jumpsuit”,
“jumpsuit_xl”,
“tool_rocket_candy”,
“chem_rocket_fuel”,
“rechargeable_battery”,
“lead_plate”,
“kevlar_plate”,
“bag_plastic”,
“nomex”,
“superglue”,
“homewrecker”,
“chem_black_powder”,
“40mm_casing”,
“rebar”,
“armor_lightplate”,
“armor_plate”,
“armor_samurai”,
“helmet_kabuto”,
“bleach”,
“ammonia”,
“corndogs_frozen”,
“pelmeni”,
“frozen_burrito”,
“toastem”,
“toastem2”,
“toastem3”,
“toasterpastry”,
“sushi_fishroll”,
“sushi_meatroll”,
“frozen_dinner”,
“sandwich_cheese_grilled”,
“johnnycake”,
“sword_nail”,
“makeshift_crowbar”,
“hotdogs_frozen”,
“horseradish”,
“bologna”,
“lasagne”,
“can_cheese”,
“sewage”,
“protein_powder”,
“briefs”,
“coffee_syrup”,
“boxer_shorts”,
“gloves_fingerless_mod”,
“ketchup”,
“peanutbutter”,
“mustard”,
“cheese”,
“V8”,
“sushi_rice”,
“can_chowder”,
“sauce_red”,
“atomic_coffeepot”,
“armguard_chitin”,
“gauntlets_chitin”,
“gauntlets_larmor”,
“gloves_plate”,
“can_tomato”,
“tomato”,
“irradiated_tomato”,
“apple_cider”,
“can_chowder”,
“mayonnaise”,
“soysauce”,
“seasoning_salt”,
“bacon”,
“taco”,
“royal_beef”,
“dry_fish”,
“can_spam”,
“crackers”,
“morel_fried”,
“cracklins”,
“fish_fried”,
“sandwich_sauce”,
“sandwich_t”,
“fish_sandwich”,
“sandwich_jam”,
“dry_meat”,
“dry_hflesh”,
“dry_fruit”,
“dry_veggy”,
“dry_meat_tainted”,
“dry_veggy_tainted”,
“milk_powder”,
“powder_eggs”,
“sashimi”,
“brandy”,
“rifle_9mm”,
“rifle_308”,
“rifle_22”,
“knife_rambo”,
“pockknife”,
“xacto”,
“bat”,
“cookbook_human”,
“diveknife”,
“knife_trench”,
“knife_steak”,
“knife_combat”,
“m320”,
“launcher_simple”,
“pipe_launcher40mm”,
“flamethrower_crude”,
“knuckle_nail”,
“oxy_torch”,
“pipe_shotgun”,
“combatnail”,
“steel_rail”,
“blun_shot”,
“blun_flechette”,
“blun_slug”,
“halligan”,
“sword_wood”,
“fire_ax”,
“cerberus_laser”,
“mn_ebr_kit”,
“diazepam”,
“small_repairkit”,
“thermal_suit”,
“ugl_buttstock”,
“large_repairkit”,
“straw_fedora”,
“shark_suit”,
“armor_scrapsuit”,
“armor_scavenger”,
“armor_nomad”,
“chainmail_suit”,
“armor_farmor”,
“armor_larmor”,
“armor_blarmor”,
“armor_chitin”,
“armor_plarmor”,
“hat_boonie”,
“hat_ball”,
“fur_cat_ears”,
“leg_warmers_xlf”,
“leg_warmers_xl”,
“plastic_shopping_bag”,
“jacket_army”,
“winter_jacket_army”,
“duster”,
“duster_survivor”,
“helmet_plate”,
“helmet_netting”,
“beret”,
“beret_wool”,
“bra”,
“panties”,
“helmet_barbute”,
“house_coat”,
“wool_hoodie”,
“hoodie”,
“tshirt”,
“sundress”,
“longshirt”,
“leather_cat_ears”,
“fur_cat_tail”,
“leather_cat_tail”,
“fur_collar”,
“leather_collar”,
“2byarm_guard”,
“2byshin_guard”,
“stockings_tent_arms”,
“stockings_tent_legs”,
“mocassins”,
“boots_western”,
“cowboy_hat”,
“cowl_wool”,
“clogs”,
“boots_chitin”,
“boots_plate”,
“balclava”,
“hat_noise_cancelling”,
“mask_ski”,
“helmet_scavenger”,
“peacoat”,
“diamond_sword_bayonet”,
“diamond_bayonet”,
“shock_staff”,
“hot_pants”,
“hot_pants_leather”,
“hot_pants_fur”,
“mask_rioter”,
“survivor_belt”,
“vest”,
“bikini_top_leather”,
“bikini_top”,
“bikini_top_fur”,
“nailboard”,
“flashlight”,
“sweater”,
“duster”,
“duster_fur”,
“duster_leather”,
“sleeveless_duster”,
“sleeveless_duster_fur”,
“sleeveless_duster_leather”,
“sleeveless_trenchcoat”,
“sleeveless_trenchcoat_fur”,
“sleeveless_trenchcoat_leather”,
“blazer”,
“heatpack”,
“fertilizer_liquid”,
“fertilizer_commercial”,
“crackpipe”,
“trenchcoat”,
“jacket_leather”,
“chem_hmtd”,
“soap”,
“syringe”,
“grenade”,
“shotgun_trap”,
“material_cement”,
“reinforced_glass_pane”,
“motor”,
“heroin”,
“lsd”,
“meth”,
“cola”,
“vodka”,
“whiskey”,
“single_malt_whiskey”,
“rum”,
“tequila”,
“raw_dandelion”,
“gin”,
“antifungal”,
“aspirin”,
“poppy_bud”,
“chem_thermite”,
“trenchcoat_fur”,
“helmet_chitin”,
“tank_top”,
“hat_hunting”,
“chaps_leather”,
“pants_cargo”,
“shorts”,
“shorts_cargo”,
“trenchcoat_leather”,
“trenchcoat_survivor”,
“jeans”,
“jacket_light”,
“shorts_denim”,
“1st_aid”,
“vacutainer”,
“saline”,
“bag_canvas”,
“duffelbag”,
“rucksack”,
“crude_firestarter”,
“surv_hand_cannon”,
“brass_catcher”,
“double_plutonium_core”,
“waffleiron”,
“saline”,
“crafted_suppressor”,
“press”,
“mold_plastic”,
“char_purifier”,
“gasoline_lantern”,
“l_HFPack”,
“matchbomb”,
“vitamins”,
“radio_mod”,
“joint”,
“l_base_223”,
“brownie_weed”,
“mn_classic_kit”,
“nailgun”,
“pistol_grip”,
“pipebomb”,
“pipe_double_shotgun”,
“saiga_sawn”,
“bottle_plastic”,
“bottle_plastic_small”,
“gummy_vitamins”,
“suppressor”,
“barrel_big”,
“barrel_small”,
“hotplate”,
“acid”,
“goggles_welding”
]
}
][/tt]
But since it also involves removing the spawns it might not be entirely what you are looking for. You could pair it with an overwrite of overmap_terrains.json and get a medieval mod.
(Which is the original purpose of the list)