It's Honduran Mahogany, My 2006 SG Standard '61 reissue had a similar grain swirl in it. Not all Honduran Mahogany is completely straight grained. Some parts of the tree do have rings that show up in the grain. I think it's partially about how the wood was originally sawed.
The African Mahogany is more like Sapele, with stripes running through it. What you have there definitely doesn't have stripes in it. That is a quite gorgeous Les Paul body you got there!