Can't decide on a first name!

Kathryn • 🇨🇦🇬🇧 Wifey to J💍 Mummy to 👱‍♀️👧🏼 Baby #3 due Oct 2023 👶🏼 💕

Our wee man is due on Oct 4, and I'm struggling with names. We've locked in his middle name (Mathew), but I'm second guessing his first name. We had shortlisted Oliver and Alexander, and finally chose Alexander; which had been my favourite. But now I'm not sure! What other names haven't I thought of that would work with the middle name Mathew? Our last name is one syllable and begins with a G.