i try to follow this 
 https://forum.bodybuilding.com/showthread.php?t=155009423 
 it's good if you want to go for 3 days a week.

Product Owner

Software Engineer

If u r not trying to be a body builder then no need to worry abt splits. Just focus on going regularly in the first place

I am fairly regular, like 5-6 days a week. Been doing that since few months now and want to up the game little bit

Start lifting heavy then. 
 How much weight can you bicep curl (don't include the bar)

How long should I stick to 4-5 day split before changing the regime

Which of these workout routines works best for you ? 

Aim - not to become a body builder, but to have a body in good shape and cuts