The Church of Jesus Christ of Latter-day Saints put together a website with photos and links to biographies of the current General Authorities of the Church. One thing that is interesting is the small size of the Second Quorum of the Seventy. It’s been smaller than the First Quorum for as long as I can remember but the size difference is striking. One reason for the difference – I believe – is the localizing nature of the Church. What I mean by that is that with the formation of additional quorums of (area) Seventies – there are 8 in total – there is not as strong a need for such a centralized church. All authority goes back to the General Authorities but with the growth of the Church, there is greater need for stronger, more local leadership. Many of those who serve in the First Quorum of the Seventy are called to serve in various parts of the world to direct the church there, but their primary calling is to provide general (global) leadership over the Church; others are called to provide more local and specific leadership.
In any case, that website is a great source of information about the leaders of the Church.