[Ashlandchris]

I’m no expert, but I’ll give it a go.
Grip comes from 2 contributors, the compound of rubber (causing traction between tyre and surface) and the size /shape of the tread pattern giving mechanical grip.
As an all-round compound, Schumacher yellow is the standard for dry conditions, and silver, as a much softer rubber works better in wet (but wears very quickly in the dry)
In regards the tread pattern mini spike is often looked at as the “mid point” forgiving tyre. Easy to drive, but there are occasionally quicker choices.
On Astro, mini pins will give more bite, but as the point is smaller, it will wear quicker so they need changing more frequently. I’ve heard it said that you can get 2-3 times the use out of mini spikes over mini pins, but the pins might be slightly quicker when new.
Darts changed things as they gave quite even wear, and (in my opinion) were as quick as pins, but as forgiving as spikes.
On indoor carpet I’m told cactus are good, but never tried them.
I will happily be corrected 😀