@kwanon nice choices on the fabric and thanks for ordering!
Honestly, I'd advise to never put an Individualized shirt in the dryer if you can avoid it. That really goes for every shirt that we sell. Outside of shrinkage, dryers will fade colors and shorten the lifespan of your shirts - especially on a higher end fabric. It would probably shrink the Madras as much as the flannel. The Albini oxford should be more resilient - that stuff is pretty bulletproof, but even still, you'll get more wear out of it without drying. Over time, oxford weaves can become unraveled and frayed, and dryers will accelerate that.
But if you have to dry them, then just do the oxford. I'd really keep that Madras out of it. The upside is that lightweight fabrics like Madras dry very quickly on a hanger.
Haha man I know. I figure that, no matter what I do, every shirt I own is going to take at least one accidental trip through the dryer.
So, I plan on it and size them that way. Better that than turning a brilliant shirt into an underwhelming paperweight.