Don't have a 2025 but have a 2020 with the multicontour seats. I would think they would be the same other than the material. When not using the massaging feature, they feel like any other seat. Mine are very comfortable and I never had any back problems or aches after sitting in them for many hours on a recent road trip. Can adjust the back lumbar at three levels as you said. I actually have not used the massage feature other than to test it out and see what it was. Definitely a weird feeling (not in a bad way). I guess I am not accustomed to massaging chairs. I am surprised by how many different massaging settings there are. On my 2020 it can be controlled either from the touch screen or a four-way switch and button on the side of the seat.
FYI, posted a response on another post today and found out something. On Job 1 builds up to 11/24/24, all ST models had the multicontour seats as standard. Starting on 11/25/24 for Job 2, they are in the optional Sun and Sound Package with the panoramic roof and B&O 14 speaker audio system. On the Ford website, looks like if you one of the features, you have to buy all three. May affect your purchase decision.