Question: I would like to arrange the following three diagrams

```
\[
    \begin{tikzcd}
        Z\arrow[dr, "h", dashed]\arrow[drr, "g", bend left]\\
            &   X\arrow[r, "f"] &   Y
    \end{tikzcd}
\]

\[
    \begin{tikzcd}
        pZ\arrow[dr, "w", dashed]\arrow[drr, "pg", bend left]\\
            &   I\arrow[r, "u"] &   J
    \end{tikzcd}
\]

\[
    \begin{tikzcd}
        \mathbb{E}\arrow[d, "p"]\\
        \mathbb{B}
    \end{tikzcd}
\]

```

as they are arranged here:
[![enter image description here](https://i.stack.imgur.com/SEbhC.png)](https://i.stack.imgur.com/SEbhC.png)

What's the best way to do it?

Answer: 
I'd use an `aligned`:

```
\documentclass{article}
\usepackage{amsmath,amssymb,tikz-cd}

\begin{document}

\[
\begin{tikzcd}[row sep=huge]
  \mathbb{E}\arrow[d, "p"]\\
  \mathbb{B}
\end{tikzcd}
\qquad\qquad
\begin{aligned}
& \begin{tikzcd}
    \phantom{p}Z\arrow[dr, "h", dashed]\arrow[drr, "g", bend left]\\
    &   X\arrow[r, "f"] &   Y
  \end{tikzcd}
\\
& \begin{tikzcd}
    pZ\arrow[dr, "w", dashed]\arrow[drr, "pg", bend left]\\
    &   I\arrow[r, "u"] &   J
  \end{tikzcd}
\end{aligned}
\]

\end{document}

```

With `\phantom{p}` in the top right diagram, we ensure similarity with the bottom one.

[![enter image description here](https://i.stack.imgur.com/vQ8dw.png)](https://i.stack.imgur.com/vQ8dw.png)
Here there is another proposal using `xy` package used to draw a `commutative-diagrams` to obtain your same image.

In this case I have used the ambient `minipage` to have the same structure of the your picture. 

[![enter image description here](https://i.stack.imgur.com/Vsoes.png)](https://i.stack.imgur.com/Vsoes.png)

```
\documentclass[a4paper,12pt]{article}
\usepackage[all]{xy}
\usepackage{amssymb}
\begin{document}
\begin{figure}
\centering
\begin{minipage}[c][10mm]{.5\textwidth}
\centering
\xymatrix@+1pc{
\mathbb{E} \ar[d]_p  \\
\mathbb{B}}
\end{minipage}
\begin{minipage}[c]{.5\textwidth}\hspace{0cm}
\centering
\xymatrix@+.5pc{
Z  \ar@/^1.5pc/[drr]^g \ar@{-->}[dr]_h\\
& X  \ar[r]<3pt>_f & Y  
}
\vfill
\hspace{0cm}\xymatrix@+.5pc{
pZ  \ar@/^1.5pc/[drr]^{u\,\circ\, w\,=\,pg} \ar[dr]_w\\
& I  \ar[r]<3pt>_u & J  
}
\end{minipage}
\end{figure}
\end{document}

```