Olympic weightlifting is already split into relatively thin weight brackets. I think the issue is that, pound for pound, men tend to be stronger than women

In the 76-81kg womens bracket current record total (snatch + cnj) is 278kg. In the 73-81kg mens bracket the record total is 363kg.

https://en.wikipedia.org/wiki/Olympic_weightlifting#Weight_c...

https://en.wikipedia.org/wiki/List_of_world_records_in_Olymp...