Neither Acts 2:39 or Romans 8:30 teach that baptism in Jesus' name is absolutely necessary for salvation. In regards to the general call, Matthew 22:14 - Called (2282 - kletos) in Matthew 22:14 is talking about the general call of the gospel which goes out to all men every time the gospel is preached.
In the Vine's Expository Dictionary of New Testament Words, we read <Adjective, 2822,kletos> "called, invited," is used, (a) "of the call of the Gospel," Matt. 20:16; 22:14, not there "an effectual call," as in the Epistles, Romans 1:1,6,7; 8:28; 1 Corinthians 1:2,24; Jude 1:1; Revelation 17:14; in Romans 1:7; 1 Corinthians 1:2 the meaning is "saints by calling;" (b) of "an appointment to apostleship," Romans 1:1; 1 Corinthians 1:1.
Called (2564 - kaleo) in Romans 8:30 conveys the idea of an effectual call and emphasizes God's sovereign work. There is a distinction between the called (klhtoi) and the chosen (eklektoi) called out from the called.
Romans 8:30 says ..whom He called, these He also justified; and whom He justified, these He also glorified. ALL of them. Notice how Paul uses the past tense for a future event to stress it's certainty.