Mine are living people whose genius I have 'felt' for myself (rather than going by other people's evaluations).
In no particular order:
1. James D Watson (DNA)
2. Freeman Dyson (Theoretical Physicist etc)
3. David Healy (Psychiatry)
4. JK Rowling (for the Harry Potter saga, nothing else!)
5. Susanna Clarke (for Jonathan Strange and Mr Norrell)
(Note: no living poets, playwrights, artists or composers (that I know of) are geniuses by my estimation.)
And yours are?...
NOTE: This particular blog post is a 'Safe Space'! - This means I won't publish comments critical of other people's choices - Here, I am simply interested to see who other people regard as living geniuses; not to defend or attack or debate these choices.