Ask an Immigration Solicitor. Get an Answer ASAP.
Good afternoon, As you are now married you can make an application for leave to remain on the basis of a spouse and children. If you as the British citizen meets the financial requirement of £18,600 per annum you can apply on this basis.
If not then he should make an application for leave to remain on private and family life I will send you a link with the applications to consider.
Yes this can affect the application but if it was due to covid he could not return then if he has evidence this will considered.
If possible it would be better for him to apply from Ghana so it shows he tried to return back after the covid situation.
Yes for leave to remain application in country they would ask for evidence if you are applying on spouse visa. As he is not resident here you would have this.
Please look at the above link.