Linked Combo's and List box

Hi,
The other day, Kevin (zorvek) helped me to get unique values into a combobox as well as sorting and formatting it.
I then copied the code and played around with it, to try and populate a second combobox with unique values from data in the next column where the first combo box gets it's data, but I keep hitting a brick wall.

Basically, I am looking to end up with this;
combobox1 is filled with unique values from sheet "ShiptToy" column G.
I am trying to get combobox2 to also get unique values from sheet "ShiptToy" column F, based on combobox1's selection.
Then I would like ListBox1 to be filled with data from sheet "ShiptToy" columns B and D based on combobox2's selection.

I don't know whether it's possible, and it may be a bit too much to ask.
I have attached a trimmed-down version of the original workbook, and if I can get this sorted, I could then try and adapt any help to fit other procedures on other sheets.

As always, any help is much appreciated.
ComboLinx.xlsm