I think Hamilton is in a higher league of overtaking than anybody else in the history of F1 in both quantity and quality. Some* of his views may be similar to Senna's but his style is not really comparable IMO.
As per his current driving.. He is in a calm place now, he has nothing to lose. What you see now is the old Hamilton but a bit wiser to the tyres - Blindingly fast, aggressive, instinctive, unforgiving and yes still making a mistake here or there, but that's what happen when you are on the limit.
I notice that in the recent races he is using a new, strange type of tyre strategy these days; he uses the tyres hard out of the box in order to pull himself forward to create an bigger opening/margin for future strategies. Then on that new strategy, in the next stint (usually the last stint) he drives on the tyres in a more normal way. He did this in Valencia and Silverstone.
The disadvantage is that he burns through the tyres a bit faster in the middle stints, and sometimes it can back-fire if the stint is too long. Just my observation.