That looks like it’s Blake Stitched. You don’t see the welt on the outside of the sole but you see the stitching on the bottom of the sole that would mean that it’s probably stitched directly to the inside of the sole. If it were Goodyear Welted, well, it would usually have a more prominent welt on the outside.
Blake stitching isn’t necessarily a bad thing, it means the shoe can have a slimmer sole and be more flexible but it also means that it might not be 100% waterproof as the stitching provides direct access to the bottom of your foot because the stitching is on the inside instead of an outside welt and the shoe won’t be as durable.
Those monk straps are definitely not gyw. Looks like Blake or Blake rapid welting, which is fine. Can still be resoled if taken to the right cobbler. Although, I doubt the leather is decent quality at that price point.