A question on a 2-group with an elementary Abelian maximal subgroup

Question

Let $G$ be 2-group of order $2^{n+1}$($n\geqslant2$) which has a maximal subgroup $N\cong\mathbb{Z}_{2}^{n}$. It is straightforward to check that if $G$ is an Abelian group, then $G$ is isomorphic to $\mathbb{Z}_{2}^{n+1}$ or $\mathbb{Z}_{4}\times\mathbb{Z}_{2}^{n-1}$. But, in the case $G$ is a nonabelian group the only group I found is $D_{8}\times\mathbb{Z}_{2}^{n-2}$. Is there any other possible structure for each $n$?