F1 is the first generation of a cross, both unrelated parents. Likely to get phenos resembling either.
F2 is taking 2 seeds from the same F1 and crossing them. So basically breeding sisters together (requires silver/sex reversal of course) phenos become a lot more stable, especially if they were already similar.
S1’s are seeds taken by using a silver sex reversed plant to pollinate itself. This is a popular and fairly easy way to get phenos closely resembling the mother.
BX1 means that the plant was back-crossed with its original mother, usually after being crossed with something else.
For an example- the Wookiees x Wizard is a BX1 because I used wizard pollen to fertilize seeds of a Wookiee, and wizard is already bred from a Wookiees mother originally.
Wookiees itself was technically a BX1 because its Wedding Cake (which is GSC x cherry pie) x GSC. But I have bred those together making a much more stable F2/S2, which you have as well.
Wookiees f2 is the most stable. I rarely get a Wookiees that grows normal leaves…most go 1, 3, 5 point then go back to growing all 3 pointed leaves. Queen g has grabbed onto that pheno a bit and seems to make 3s and 4s strange enough.
So yes it’s basically just taking my favorites of the autos I’ve grown in the last few years and trying to isolate features…mostly taste driven hunts for this smoker…