These are not so bad. However, if I can be honest, I feel like the Busy 2 and 4 cursors feel out of place. I mean, yes, they are Windows logos, but they don't match the style of the rest of the cursors. Busy 3 matches the Working in Background 1 cursor, though Busy 2 doesn't have the best design (no offense), and Busy 4 just looks like you took a picture from Google and gave it a spinning animation. Again, no offense, they do look decent, though the Busy cursors may need some work.
Windows Logo Cursors
Windows Cursors that I made today for fun.