looks to me like a square topped by a flying geese unit, then padded out with background (sky) fabric. The flying goose is the same width as the square. So for the larger ones, arbitrarily decide that they are 6X6 squares. top with a 3X6 flying goose, When these are sewn together, they make a 6X9" unit, so we need to add 3" to pad it out to a 9" block so you would add a 1.5" strip of fabric matching the sky of the flying goose to either side. If you look at the quilt, all the sky/border fabrics are solid which blends this seam in.
The dimensions I've quoted are finished dimensions. You would cut the square 6.5", the FG is 3.5 X 6.5 raw and the side strips would be cut 2X9. Should be able to figure out the smaller ones in the same way .