New mortgage application

I have been renting for the last 5 years although did have a mortgage prior to this which was paid off in full.

I am now looking to buy a house again and take out a mortgage. My query is, could I be considered a first time buyer as I have not had a mortgage for 5 years? Technically I know I'm not but I have been told I may be considered a first time buyer, but I don't really understand that?

If not what would be the best type of mortgage for me to go for?

Many thanks