The dynasty today is represented by the descendants of Prince Leopold of Great Britain, Duke of Albany -- youngest son of Queen Victoria and Prince Albert. But other agnates would include Her Majesty the British Queen's Kent and Gloucester cousins (first cousins, children of her male cousins, and their grandchildren through sons).
Elsewhere, one has the four children of the Belgian king, his siblings, and the children of Prince Laurent. The children of the deposed Bulgarian king, as well as his grandchildren through sons, would also count.
Are there other lines and examples of agnates?