What docking station is compatible with iMac Pro 5?

Since Apple released no "Mac Pro M5", I must assume you are referring to the MacBook Pro M5.

A docking station may or may not list specific compatibility with the MacBook Pro M5.

If it is of a design that connects to the Mac with a cable, then compatibility may simply state that it is Mac and/or macOS compatible.

Generally speaking, if a dock is compatible with one Mac - say an M4 version - then it is likely compatible with another M4 Mac and probably the M5, too, but there's no guarantee. This is partly dependent on the connection protocol as Thunderbolt vs USB-C. The connector fits but the communication protocol - Thunderbolt or USB - is different. A dock may support either or both. The devil is in the details when looking at specs and recommended software and hardware requirements. If the dock supports a lesser level of Thunderbolt or USB-C than your Mac does, it cannot provide the best performance.

In your case it's important to find a dock that is compatible with Thunderbolt 4 & USB 4 at minimum and Thunderbolt 5 if that's what your MacBook Pro has. This for the best performance, especially if you plan to ues this to connect external monitors.

MacBook Pro - Tech Specs - Apple

In a nutshell, as long as the dock supports Mac and has the right connections, then yes, it should work.

If the dock is designed with a body that plugs directly into the side of the MacBook and not with a short cable pigtail, then you must find one that specifically fits your MacBook Pro M5.

Your original post cites "iMac Pro 5", which I assumed was reference to the iMac Pro with 27-in 5K Retina display.

The iMac Pro features a 27-inch Retina 5K display with a resolution of 5120-by-2880, Intel Xeon W processors (up to 10 cores), and Radeon Pro Vega graphics options. It also includes up to 128GB of ECC memory and a solid-state drive (SSD) configurable up to 4TB.

The "Mac Pro":

42 lb silver tower desktop computer, with no included display

did you mean the "MacBook Pro with M5 (plain)" processor?

The MacBook Pro M5 features a 14-inch Liquid Retina XDR display, a 10-core CPU, a 10-core GPU, and a 16-core Neural Engine. It offers up to 24 hours of battery life, options for 16GB or 24GB of unified memory, and storage configurations ranging from 512GB to 4TB SSD.

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Docks connect to Macs with one of USB-C or Thunderbolt of various versions.

Many, many, docks intended for the Windows marketplace suggest you can connect up to three display on a single USB-C docking station.

NB>> Not on a MAC (of any description) you can't.

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Just EXACTLY as D.I.Johnson suggested:

Start by checking the description or the specs of any that you're interested in to see if they are compatible with Macs and macOS.

So many!

Start by checking the description or the specs of any that you're interested in to see if they are compatible with Macs and macOS.

For use with external displays, Docks for use with a Mac vary widely.

At most ONE display can be supported by a USB-C connected dock, and at most TWO (provided there is enough bandwidth) on a Thunderbolt Dock.