One of them is the Baptist doctrine of submission. A couple of pointed posts by LDS women who certainly do not share the Baptist view of submission are "Huckabee is a Chicken Patriarch" at Feminist Mormon Housewives, and "Follow-up on Huckabee and 'Chicken Patriarchy'" at Zelophedad's Daughters. The Bloggernacle features entire blogs full of women who don't share the Baptist view of submission. In fact, I think it is fair to say that, apart from the CES and a few hundred octogenarians scattered along the Mormon Corridor, the entire LDS Church rejects the Baptist view of submission.
Here's a little more information on this interesting topic. First, from Article XVIII ("The Family") of the Baptist Faith and Message ("BFT"), a Southern Baptist Convention document that is something like their articles of faith: "A wife is to submit herself graciously to the servant leadership of her husband even as the church willingly submits to the headship of Christ." That's the formal statement. I suspect in practice that graciousness is optional, but submission is mandatory.
Here's a NYT article (from 1998): "Southern Baptists Declare Wife Should Submit to Her Husband." It comments on the addition of this langauge at the 1998 Baptist convention (in full, a 250-word amendment) to the BFT: "The vote was overwhelmingly in favor of the amendment, and an effort to soften the language was soundly turned back." It also quotes a Baptist leader who disagrees with the new amendment as saying: "''They hope to make June Cleaver the biblical model for motherhood, despite numerous biblical references to women who worked outside the home." There's also some discussion of the Mormon angle to the Baptist action at the end of the story. (That was the year the convention was held in Salt Lake City.)
Here's a long discussion of the topic, with interviews, in a transcript from the NewsHour with Jim Lehrer.
And this blog post from the executive director of Mainstream Oklahoma Baptists: "Huckabee Lies About SBC Family Statement." Key point: "The SBC's family statement calls for a one-sided submission by the wife to the rule of her husband."
So it's obvious why the "equal partner" langauge was included in the LDS Proclamation on the Family — to prevent LDS conservatives from construing the Proclamation as an endorsement of the conservative view represented by the Baptist submission doctrine. Now we just need Correlation to do its job and make sure all LDS materials reflect the "equal partners" view announced by the Proclamation.