A Bible truth - "one baptism". (Ephesians 4:5)
However, according to 'accepted wisdom', there must be two baptisms - one visible, and one invisible.
The understanding is that the 'anointed' are baptised in Holy Spirit - so when does this baptism take place, becaue nobody becomes 'anointed' at their water baptism!!!!! (John 3:5, Acts 2:38, & 5:32 - great places to start research on exactly who gets Holy Spirit & when!)
Please do not rehash the 'doctrine of men' that everybody in the 1st century who exercised faith in Christ would become part of the 144,000 -
'heavenly hopers' and 'anointed' are not the same thing!!! (Didn't the dying thief exercise faith in Christ? True, he hadn't stuck with Christ during his trials, but neither did the thousands who were baptized at Pentecost. So that fallacious reasoning is worthless)