If an individual in your church had been scriptually baptized in the past - and for whatever reason wanted to be re-baptized - would you / your church do so?
I am not referring to someone who thought they were saved in the past - and needs to be baptized.
This would refer to someone who may have backslid and needed to rededicate their life to the Lord, or other such situation.
Note: Just edited - I had initially put spiritually baptized - corrected to scriptural baptized.
Take note of where the command to baptize fits in the order of events listed in the Great Commission in Matthew 28:19-20.
It follows the command to "go" with the gospel (Mk. 16:15) which is an aorist tense participle that infers that it is already a completed action prior to the action of "teach" or "make disciple." Thus, gospelization has already been completed and the pronoun "them" in verse 19 refers to those already having been gospelized. Hence, baptism is not for infants but for believers. If a person is not a believer than they just got wet but never baptized.
Second, it precedes the command to "teach them to observe all things whatsoever I have commanded you." This defines the authorized administrator as one who can "teach them to observe all things whatsoever I have commanded you." Anyone who is not like faith and order with Christ has no authority to administer baptism, as the very ones authorized to administer baptism are authorized to make them disciples in like faith and order with Christ. Hence, all others simply make people wet but not baptized.
So, baptism is designed not only to identify with Christ of the gospel (v. 19a) but is designed to identify the believer with the faith and order of Christ (v. 20).
This should be obvious because Christ authorized them to make disciples, followers, not inovators and heretics and the only possible administrator that can obey this is one who has already been taught to observe all things Christ has commanded.
Finally, the authorized administrator is a church member. First, because they already "have" been discipled and that includes becoming a believer, being baptized and gathered into a teaching observing assembly as proven by Acts 1:21-22. Second, the third aspect of the Great Commisison - "teaching to observe all things whatosever I have commanded" requires physical assembling of newly baptized believers together with the teacher either as an already existent church assembly as in Acts 2:1, 40-41 or a newly organized assemblies as in Acts 14-18.
Why? Because it is not possible to teach them to "observe all things...commanded" apart from church membership as observing Matthew 1815-20 requires membership in a church body. Matthew 26:12-30 requires actual physical assembling together. Failure to be "added" to a congregation is an abnormality not the norm of Scripture.