It is all neatly presented at AY webpages. No priority security at MUC, take o look at the list here:
https://www.finnair.com/FI/GB/inform...ority-security
Info on lounge access can be found here.
https://www.finnair.com/FI/GB/inform...ounge-list#MUC
I only transferred at MUC and then it is bad. YMMV.