I really enjoy Sydney Cummings’ content on YouTube. Her “Strong” program includes workouts that focus on one or two muscle groups at a time. For example, Day 3 is primarily biceps, with a few back exercises mixed in to give your biceps a break between sets, and Day 2 focuses on glutes.
She has a great way of motivating you through the workout and encouraging you to stay committed, which some might not prefer, but it really helps me stay focused.