Generally the majority of people strength training the ratio between front(chest, front delt) to back should be 1/3 exercises for front and 2/3 for back. Most are front-dominant. Judging by your regimen, this does not necessarily seem to be your problem - the exercises you have described would give a good strong and balanced body.
But what is also quite common - I have done it for years myself - is working the back without really hitting it at all. Meaning you can do back exercises without really using your back muscles fully. A lot of it comes down to retracting your shoulder blades and only use your arms as "hooks" - not prime movers. Always start your back exercises by retracting your shoulder blades and then squeeze them together at the end. This is a lot easier with a buddy who can put his fingers between your shoulder blades and then make you "squeeze" them. Another "que" that can be helpful for rows of various sorts is to wrap your shoulder back around a pole in the end of the movement. Pausing at the end of full contraction with your shoulder blades pinned together for 1-2 seconds on each rep can also be helpful.
Finally as someone mentioned above - do facepulls. Concentrate on retracting your shoulder blades as described above and pause the movement in full contraction. Use low weight - no one cares what you facepull - the important part is activating the right muscles.
But what is also quite common - I have done it for years myself - is working the back without really hitting it at all. Meaning you can do back exercises without really using your back muscles fully. A lot of it comes down to retracting your shoulder blades and only use your arms as "hooks" - not prime movers. Always start your back exercises by retracting your shoulder blades and then squeeze them together at the end. This is a lot easier with a buddy who can put his fingers between your shoulder blades and then make you "squeeze" them. Another "que" that can be helpful for rows of various sorts is to wrap your shoulder back around a pole in the end of the movement. Pausing at the end of full contraction with your shoulder blades pinned together for 1-2 seconds on each rep can also be helpful.
Finally as someone mentioned above - do facepulls. Concentrate on retracting your shoulder blades as described above and pause the movement in full contraction. Use low weight - no one cares what you facepull - the important part is activating the right muscles.