Although there is a bit of play I have seen worse.
I'd be tempted to remove the drive flange and see if the nut behind it is done up properly.
Over time the splines in the places where the half shafts meet the centre of the differential wear...
Except for the 9/16th spanners to remove the propshaft/ U/js.
I had to order them speshul from UK to Frogland when I needed to replace the cardan jointed one!
Nice to see its cooler. Bit ov rain last nite. Not much. Patio dried out quick. Put some bacon out fer kev last nite. Still there smornin. Baby squirrel on me fence eating a nut and watching me frew the kitchen window.
I expect you have seen this already, but it does give pause for thought to you, your missus and any of us who have drawn up wills. It certainly made us rethink.
https://www.bbc.com/news/articles/cx2390x51zqo
I know I should but I am an arse when it comes to trying to get things "right" and understand why they are not "right".
A character flaw on my part I am sure. If other "mini-folk" tell me that this is not abnormal I can stand down I am sure.
They look very acceptable, especially as the condition of rings and bores is an unknown, if it runs well enough for your liking, leave it alone and go and enjoy it !
Seriously, those don't look bad at all. It may now be down to valve disparity. I.e. slight difference in how they seal. Recheck the tappets and compression on all cylinders. If you are seriously that bothered, nothing there to worry about.😉