Baxdrostat and Ventricular Remodeling

The goal of this trial is to learn whether adding the blood pressure medication baxdrostat (Baxfendy) to standard-of-care medical therapies will beneficially change the heart structure and function of adults who have high blood pressure, thickened left heart walls, and are at risk for heart or kidney disease. To determine if baxdrostat improves heart structure and function, the participants will: * take a baxdrostat or a placebo (a look-alike tablet that contains no drug) tablet once a day for 12 months * undergo a safe and non-invasive cardiac magnetic resonance imaging scan (to measure heart mass, stiffness and function) at the beginning of the study and 12 months later * visit the clinic for checkups and blood or urine tests 2 weeks, 1 month, 3 months, 6 months, 9 months and 12 months after taking the first tablet