Maybe you need to reflect on why that is, if you find it astonishing. My personal view is that Tories are less interested in the person the leader is, and more what they think (s)he will do for them. How else could you explain the elections of John Major, William Hague, Ian Duncan Smith, Theresa May or Liz Truss? Not a single personality between them.
With Labour, they are more likely to elect the person they like more as a person. Given the traditional Labour heartland it's no surprise that the favoured candidates are white and male. There is of course a large Labour element in inner cities which means ethnic minority candidates get elected, but the wider party is northern and white.