Here are my thoughts + the stats provided with each stone.
Clefablite: Magic Bounce (+10 Attack, +20 Defense, +40 Special Attack, +20 Special Defense, +10 Speed | +
| +2.3 Kg)
Will definitely see some use, especially cause of the Flying type addition.
Victreebelite: Innards Out (+20 Attack, +20 Defense, +35 Special Attack, +25 Special Defense | +110 Kg)
Will 100% be banned. Anything that has big hp stat can just nuke things easily in addition revival dance is free for more abuses.
Starminite: Huge Power (+65 Attack, +20 Defense, +30 Special Attack, +20 Special Defense, +5 Speed )
Will be banned 100%.
Skarmorite: Stalwart (+60 Attack, -30 Defense, +30 Special Defense, +40 Speed | -10.1 Kg)
Worthless ability in singles, won't see real use.
Chimechite: Levitate (+30 Defense, +40 Special Attack, +30 Special Defense | + | +7 Kg)
Will remain a meta staple better then Latiasite if you want steel or are a steel)!
Excadrite: Piercing Drill (Contact moves bypass protect, but only deal 25% damage when doing so) (+30 Attack, +40 Defense, +15 Special Attack, +15 Speed | +19.6 Kg)
Not much use in Mix n Mega, maybe if a double version was a thing this would be somewhat useful.
Chandelurite: Infiltrator (+20 Attack, +20 Defense, +30 Special Attack, +20 Special Defense, +10 Speed | +35.3 Kg)
Kinda garbage now, loss of fire immunity is a sad thing, may change the dynamics of stuff like Entei Feragatrite.
Golurkite: Unseen Fist (+35 Attack, +25 Defense, +15 Special Attack, +25 Special Defense )
Not gonna see much of any use.
Floettite: Fairy Aura (+20 Attack, +20 Defense, +30 Special Attack, +20 Special Defense, +10 Speed | +99.9 Kg)
Guess it could work on a fairy setup sweeper but otherwise won't see much of any use.
Meowsticite: Trace (+60 Special Attack, +20 Special Defense, +20 Speed | +1.6 Kg)
Seems kinda meh, Trace is interesting but I doubt it will see much use as the ability is hit and miss.
Hawluchanite: No Guard (+45 Attack, +25 Defense, +30 Special Defense | +3.5 Kg)
Will definitely see a lot of experimentation with dynamic punch spam, Zap Cannon spam but I highly doubt it will be banned. What got Pidgeotite banned wasn't just No Guard but rather its high speed and special attack in combination with No Guard.
Crabominite: Iron Fist (+25 Attack, +45 Defense, +40 Special Defense, -10 Speed | +72.8 Kg)
Meh, Iron Fist is a relatively weak amp and the stats don't do much that others do better, maybe on a Trick room team cause it does give nice defenses.
Drampanite: Berserk (+25 Attack, +25 Defense, +25 Special Attack, +25 Special Defense )
Kinda weak, maybe someone will find a use for berserk but the all aroundness of the stats is a shame.
Scovillainite: Spicy Spray (Burns opponent whenever they attack) (+30 Attack, +20 Defense, +30 Special Attack, +20 Special Defense | +7 Kg)
If it works as it says, 100000% banned.
Glimmoranite: Adaptability (+35 Attack, +15 Defense, +20 Special Attack, +15 Special Defense, +15 Speed | +32 Kg)
Seems kinda eh, Lucarionite is probably just better in general but for slower mons this could see use especially on TR possibly.