[souffle]

They will likely be hybrids somewhere along the line but they do look like pearl winter whites most closely in the pic.
As long as you are prepared and able to separate should they fall out then two will be fine. Babies always stick together and usually the issues arise when they start to mature and their hormones come in.
They look very sweet. Get a nice big cage and two wheels, water bottles and I would scatter feed them rather than have bowls.