In summary, my biome isn't spawning strays, but instead spawwn creepers.

I bet it is some biome tag that I ddo not know of, if so what is deh nam of the dag?
some code above that works...
  "features": [
    [],
    [],
    [],
    [],
    [
      "minecraft:ice_spike",
      "minecraft:ice_patch",
      "minecraft:iceberg_blue"
    ],
    [
      "minecraft:ice_spike",
      "minecraft:ice_patch"
    ],
    [
      "regions_unexplored:calcite_vein",
      "regions_unexplored:diamond_ore"
    ],
    [],
    [
      "minecraft:spring_water",
      "minecraft:spring_lava"
    ],
    [
      "minecraft:patch_grass_badlands",
      "minecraft:patch_sugar_cane"
    ],
    [
      "minecraft:freeze_top_layer"
    ]
  ],
  "has_precipitation": true,
  "spawn_costs": {},
  "spawners": {
    "ambient": [],
    "axolotls": [],
    "creature": [
      {
      "type": "blue_skies:snow_owl",
      "maxCount": 4,
      "minCount": 4,
      "weight": 5
      },
      {
        "type": "minecraft:goat",
        "maxCount": 4,
        "minCount": 4,
        "weight": 5
        }
    ],
    "misc": [],
    "monster": [
      {
        "type": "minecraft:stray",
        "maxCount": 4,
        "minCount": 4,
        "weight": 130
      },
      {
        "type": "minecraft:creeper",
        "maxCount": 4,
        "minCount": 4,
        "weight": 100
      }
    ],
    "underground_water_creature": [
      {
        "type": "minecraft:glow_squid",
        "maxCount": 4,
        "minCount": 1,
        "weight": 10
      }
    ],
    "water_ambient": [
    ],
    "water_creature": [
    ]
  },
  "temperature": 0
}