You’re right that options in EU are little different from those in the US.
Regarding zwave and ZigBee locks in the EU you may want to look at the IDLock 150 and Yale T1L. They both very good locks and work with SmartThings.
Keypad options are little more limited. You can take a look at the Popp keypad which is a Z-zwave keypad and has an integration available for SmartThings, keep in mind that it’s better to use 1.5v lithium batteries for this keypad to improve battery life.
There’s also the Nuki keypad but the integration with ST is still pending an update from Nuki to the combo bridge.
We’ve just completed integrating about 11 devices from frient into SmartThings. There are more in the pipeline including a frient ZigBee keypad. I don’t have an exact ETA for the keypad at this time as we’re still working with SmartThings and frient on the plan but I hope to see this integration available sometime next year.
If you can get your hands on a Xfinity, UEI or Iris ZigBee keypad from ebay it should work very well with SmartThings in EU.