My personal experience is that you'll actually grow significantly stronger, and make better size gains (lasting gains) by working each body part once a week.
In truth, your stabilizers come into play sufficiently on back and chest and shoulders so that you're hitting them twice a week (ancillary, granted, but sufficient to give you reason to give them more rest).
I'm convinced that real growth happens through recovery, and the varied attention to each group afforded through this approach means you truly only need train them once every seven days. It lets you push a little harder, and spend a little more time working each group from a variety of angles.
Everybody has something that works best for them, but nothing has worked as well for me as this approach. I rejected it in my earlier days of training, and only after a long, long layoff and coming back to it late in life did I realize what tremendous benefits there are to this method. I truly wish I'd practiced it at the start, I may never have been away from training so long.
For what it's worth, here's the split I prefer
M - a.m. cardio p.m. chest
T - a.m. cardio/core p.m. back
W - a.m. cardio p.m. legs
TH - a.m. cardio/core p.m. triceps
F - a.m. cardio p.m. delts
ST a.m. cardio/core p.m. biceps
SN - rest - no lifting
You can work this split according to what you prefer. I like the first day back to be a bodypart that needs that added boost of energy and push that you get from coming back fresh. Just give upper/lower push/pull at least two to three days between approaches. e.g. no back followed by biceps the next day, etc. On weeks where I feel like I need an extra day of rest, I'll take Wednesday off, push legs to Thursday and do tri's and delts together on Friday. On crazy days where schedule won't permit an a.m./p.m. workout, I'll do an a.m. workout with core at the end, and get cardio through a quick early evening swim or kayak or paddleboarding. No carbs (particularly grains) after 5 p.m. as this interferes with restful sleep, and can cause joint inflammation at night. Adding some casein to your diet as a pre-bed snack (one hour prior to bed) such as cottage cheese, and you'll see added benefit to both keeping you in ketosis and helping your sleep better.