Calvinists/reformed believe in baptismal efficacy, to the elect of God. Which, really, Lutherans believe too, if you follow the theological rabbit trails.
Lutherans, before you protest, think. Are the elect of God saved? Did their baptism(as infants) play a part? That's baptismal efficacy. Case closed.
Please note that Calvinists/reformed does NOT apply to modern American arminians(think broad evangelicals/ baptists, etc).
And, the visible vs invisible Church is something a Lutheran might find in, say, the Apology?
" For we grant that in this life hypocrites and wicked men have been mingled with the Church, and that they are members of the Church according to the outward fellowship of the signs of the Church, i.e., of Word, profession, and Sacraments, especially if they have not been excommunicated.
4] Neither are the Sacraments without efficacy for the reason that they are administered by wicked men; yea, we can even be right in using the Sacraments administered by wicked men. For Paul also predicts,
2 Thess. 2:4, that Antichrist will sit in the temple of God, i.e., he will rule and bear office in the Church.
5] But the Church is not only the fellowship of outward objects and rites, as other governments, but it is originally a fellowship of faith and of the Holy Ghost in hearts."