Stick with the name trend for 4th baby?

Our first two babies we coincidentally named with a middle name that starts with the letter “A”. For our 3rd baby we went ahead with the trend because we had an A name we really liked for her middle name anyways. Now I feel pressured to stick to an A name for our 4th baby but I don’t love many A names for boys so I’m having a hard time coming up with something. We’ve already settled on Jack for the first name if it’s a boy. What would you do? Ignore the trend and go with whatever name or keep digging for an A name that sounds good with Jack? Our last name is Mahler (pronounced Mall-er) so I feel like it limits the names (other middle names ending in ER sound weird to me).