Answer:
I couldn't find the chart anywhere, but if you have produced pigmy stripe rabbits already, it'll be possible interbreed the rabbits from the stock. I mean pigmy rabbit with pigmy rabbit only. Other type of rabbits are different species.
Explanation:
Pigmy striped rabbits belong to Brachylagus genus, and are different enough from another types of rabbits to be crossed, and obtain fertile progeny.
Physically, pigmy rabbits are much smaller than a mean rabbit (European rabbits or cottontail rabbits), and probably their genitalia don't fit properly.
Apart from this, many other differences exist, although cottontail rabbits are the most similar, genetically speaking