to save me wasting the next 3 days on interwebs does anyone know of a list anywhere for strains that are IBL or close to it that are 8 weeks flower or under?
I don't know about a list but there's really only a hand full of true breeding, stable strains around.
Then you'd have to find the original IBL version of that strain name as every man and his dog has the same named strain.
To start off with Sensi's 'Skunk #1' is a stable IBL and is done in 8-9 weeks.
Serious 'AK47' should be another but I don't know flowering times.
The best advice would be to stay well away from modern seedbanks and go for the old-school original guys.
And unfortunately stay away from Mr Nice, Shanti had most of the proper true breeding stock from back in the day kept at the GBT facility in Switzerland but that's all gone to shit since he got raided and did prison time.