Obviously there is veeeery wide diversity on the subject.
I believe "believers" are baptized by His Spirit, unseen.
1 Corinthians 12:13
For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
Did we see any of that with our eyes? Uh, no.
People who have received the Holy Spirit, [Baptized with the Spirit], has evidence that is seen or heard.
Therefore being exalted to the right hand of God, and having received from the Father the promise of the Holy Spirit, He poured out this which you now see and hear. Acts 2:33
14 Now when the apostles who were at Jerusalem heard that Samaria had received the word of God, they sent Peter and John to them, 15 who, when they had come down, prayed for them that they might receive the Holy Spirit. 16 For as yet He had fallen upon none of them. They had only been baptized in the name of the Lord Jesus. 17 Then they laid hands on them, and they received the Holy Spirit.
18 And when Simon saw that through the laying on of the apostles’ hands the Holy Spirit was given, he offered them money, 19 saying, “Give me this power also, that anyone on whom I lay hands may receive the Holy Spirit.” Acts 8:14-19
JLB