The crucifixion portrait at the altar where my grandfather was baptized in Northern Germany at a Lutheran Church looks just like something you’d see at a Catholic Church.
I was brought up as a Lutheran.
When I came back to Christ, after 40 years, I went “church shopping”. I attended a Catholic service ( it was in English). I was amazed. With the exception of perhaps a word, maybe two, the liturgy was the same as the Lutheran liturgy I grew up with.
Almost no change at all!