We had a similar discussion at the place I work last year when we were all asked to consider a great sportswomen as part of a project we were doing around International Women's Day.
Kelly Homes is a great shout but for my nomination I went a little more recent and suggested Kate Richardson-Walsh the Team GB Hockey captain who lead her side to Olympic Gold in Rio. In sporting terms she is GB's most capped player and she lead the team for 13years! I don't know if you watched the final between GB and the Dutch but it was an incredible effort by our girls against a Dutch team that was far superior in terms of individual skill. We had a plan of how we were going to win that game and it was clear that every single player had bought into that strategy. I think that when a sporting team (or any team for that matter) are that unified and focused, then a large amount of credit has to go the leadership within that group.
From a personal view point she and her partner Helen Richardson-Walsh (also in the Team GB squad) became the first same-sex married couple to win an Olympic Gold medal together. Later when they received the OBE and MBE respectively, they became the first same-sex couple to be honoured by the Queen within the same year.