Started doing ATM 6 with a group of friends, and we added Lycanites mobs because we enjoyed it in other packs, but I'm seemingly unable to restrict them from spawning.

I have this in my spawn.json, and I've tried variations with other things such as "hostile":true and "spawner":false, but nothing seems to be working.
{
"dimension": "minecraft:overworld",
"minspawndist":450,
"result": "deny"
},
Is this an issue with my addition to the file or am I doing something else wrong?

Full code below for details.

[
{
"dimension": "minecraft:overworld",
"minspawndist":450,
"result": "deny"
},
{
"dimension": "twilightforest:twilightforest",
"mob": [
"iceandfire:siren",
"iceandfire:sea_serpent",
"iceandfire:hippocampus"
],
"mincount": {
"amount": 10,
"perplayer": true
},
"result": "deny"
},
{
"dimension": "allthemodium:the_other",
"mob": [
"iceandfire:hydra",
"iceandfire:ghost",
"iceandfire:dread_scuttler",
"iceandfire:dread_beast",
"iceandfire:dread_horse",
"iceandfire:dread_thrall",
"iceandfire:dread_ghoul",
"iceandfire:dread_knight"
],
"mincount": {
"amount": 10,
"perplayer": true
},
"result": "deny"
},
{
"dimension": "twilightforest:twilightforest",
"mod": [
"ars_nouveau",
"mana-and-artifice"
],
"result": "deny"
},
{
"dimension": "minecraft:overworld",
"mob": "iceandfire:myrmex_queen",
"result": "deny",
"onjoin": true
},
{
"dimension": "allthemodium:mining",
"mod": "ars_nouveau",
"result": "deny"
},
{
"dimension": "compactmachines:compact_world",
"mod": "ars_nouveau",
"result": "deny"
},
{
"mob": [
"mana-and-artifice:demon_imp",
"mana-and-artifice:hulking_zombie",
"mana-and-artifice:lantern_wraith",
"mana-and-artifice:mushroom_soldier",
"mana-and-artifice:pixie",
"mana-and-artifice:skeleton_assassin",
"mana-and-artifice:spellbreaker"
],
"mincount": {
"amount": 1,
"perplayer": true
},
"result": "deny"
},
{
"mob": [
"mana-and-artifice:witch_hunter"
],
"result": "deny"
}
]

Sorry for late reply. Try adding "onjoin": true to the rules. I'm closing this because it's likely no longer relevant. If it still is let me know