Minecraft Skybedrock + Bud's debug pack lighting issues for slime spawn 

I'm playing on a Skybedrock world (www.planetmine...) and trying to make a slime farm. Not sure if there is slime chunks so I figured I'd just make a spawning platform in the swap biome.
Using Bud's debug pack (www.mediafire...., I can get the light level info to fine tune this platform with a layer of leaves above to diffuse daylight and precise torch placement to give me a max light level of 7 during the day and no lower than 1 at any spot at night.
I've seen 2 slimes spawn so far, but so do other mobs like skeletons, creepers, and zombies that are only supposed to be spawning at light level 0. I'm not sure what I am doing wrong here.
Shout out to @MaddHatter for sharing Bud's debug pack. Just wish there was more information on it.