Not bad. Some of the links felt a bit tenuous to me. The Blood line in particular isn't really one link, more like the foundation for a whole grid of its own.

The Blume line was one that I couldn't see in the grid, but was immediately obvious after the wall resolved. Love it.

The "Hub" line would work if the same prefix were used throughout, but allowing for multiple spellings makes it feel unfair to me. Agreed with Aetees on the Blood group. I would be very happy with that as a first-round "find the connection" group (and in fact I found the connection between them) but it feels too loose for a grid.