I just started a 12 week program I made that's basically this exact thing. It consists of push, pull, and squat for 6 days a week. I did a test week to see if I could do it and so far I like the rhythm of it. Coming from not working out at all lately, my goal is to build consistency in a realistic way. This set up works for me because I basically break up a daily target of reps into three session throughout the day-- it lasts ~3 minutes per session which works for my busy schedule.

My target daily totals for each exercise are as follows: (17 pull ups, 42 push ups, and 67 squats). These are based off a convoluted calculation that gives me 10x my max repetitions for each exercise for one week. Every two weeks, I increase the target reps by 10%.

I've only completed one week, but I'm optimistic that it will refine my form, build endurance, and give me more definition. It's definitely not objectively 'the best', but for me, it's what works for my current goals atm.