My current fave, though not on your list, is Joanna Gains of HGTV's "Fixer Upper" and of her own home and hearth enterprise which includes Magnolia Homes, Magnolia Table, and Magnolia Journal etc.
Paula! Martha has an underlying feeling of creepiness to me. I'm sure if I met her in person I'd feel differently. It's just how she come across to me on film.