I think those are the body types. Base van has windows only on the 1st row, combi has at least in the 2nd row, but I think could also have 3 side windows on each side. That doesn't answer your question.
Just to show you the idea on the example of the 1st gen Doblo:
This is a base van, it has a separation an the back of the front row seats and can be registered as van:
And this is the combi (it's a short of the Italian Combinato, which means Combined). It has 2 or 3 rows of seats.
There's also the Panorama, but it seems it is named like that by the Turks in the Classic model (explanation below).
The Doblo has several generations. The forum
ePER covers only a few of them:
The thing becomes tricky when it comes to naming

The Saxons count it differently than the Central and Southern Europeans. Including the Italians
From what I could find over the internet the 1st generation Doblo was produced since 2000 to 2010.
FIAT made a facelifting (marked REST. on the screenshot above) of the model in 2004. They started to sell it in 2005. This would be called 2nd generation in the UK

Just to add some more confusion, the production of this model continued later on in Turkey and was sold as the Doblo Classic.
The 2nd generation Doblo (or the 3rd one if you're a Saxon) has been produced since 2010 to 2020 (combis) and 2022 (vans). On the above screenshot you'll find in under Nuovo Doblo.
The facelifting had place in 2014, and commercialized since 2015. This one would be probably called 4th gen in the UK
The Italian 3rd gen Doblo was presented in 2022. And I assume was named in the UK as the 5th gen.
Car manufacturers cooperate between themselves. As far as I remember, there is a twin of one of the generations of the Doblo badged Opel / Vauhxall Combo (which in it's previous generations was a Corsa with this boxy thing at the back).
The Italian 2rd gen Doblo has a twin named Ram ProMaster City in the North America.
The Italian 3rd gen Doblo in fact is a twin of the Citroen Berlingo.
So, as you can see, there's nothing wrong you were lost in the model naming
Usually wikipedia is a good source of general information of such kind on the models.
You can easily differentiate the generations and facelifting with the look of the headlights and bumper (they call it facelifting for some reason):
1st gen 2000 - 2005 (223):
1st gen faceliting 2005 - 2010 (223):
2nd gen 2010 - 2015 (263):
2nd gen facelifting 2015 - 2022 (263):
3rd gen:
Another useful information is that FIAT is having codes for each generation. They are 223 and 263. I don't know the model code for the newest Doblo. I've put those codes in brackets just above, by the side of the photos showing the visual differences.
All of the above does not mean there were no changes in the production in the meantime. But the body being the most costly to modify, the producers tend to keep as much of the chassis as possible for as long as possible.
That's why it is best to check and compare having the VIN number(s) which is unique and as it shows the most relevant information. Under condition no one messed around during the years with the vehicle (17 years already).
From the information provided in the initial post I understand that both your van (2008) and the breakers van (2010) are the 223 model face lifting. Having said that the body is very expensive to change, I can be 99% sure that the door itself was the same since 2000 to 2010. I would also assume same is for the windows and locks - they are not visible, so no one care about it. The trims on the inside and outside can be however different to make the vehicle look younger / more modern / newer. For example, the Ducato shares the same body since 2006 until now.
Coming back to
ePER, I will assume that it's the Doblo REST.
That shall be then the correct subcategory to look at:
FIAT DOBLO REST. 2005 (2005-....)
eper.fiatforum.com
There are several diagrams on the bottom, you can swipe to see more.
The 2nd one looks the one we need for the window mechanism:
Both the manual and power window mechanism have the same number on the diagram, which means the description should tell us which is the correct part number:
When you run your mouse over the circled i just in front of the E028 in you'll see it's the power window option. There are left hand side and right hand side mechanisms for each manual and powered. And for some reason there are still 2 of each - probably some production improvement in the meantime.
The parts marked with 3, 4, 5 and 7 are the same (according to
ePER) on manual and powered windows versions.
The power window door will however have a wiring loom and the inside trim which is different.
The window itself is the same looking at the part number:
But from what I can see there were two versions of the window: tinted and clear. This is easy to compare: take a white sheet of paper and put it on the other side of the window. You'll definitely see the difference if there are different.
To confirm the modification theory and perhaps explain the doubled window mechanism I run over the circled i in the Modification column and it says there was a modification since June 15th 2006. Which is past the facelifting, but prior to the 2008 and 2010 production dates.
Looking at the door structure, it has only 2 versions per side, which also confirms that both manual and powered windows mechanism will fit.
However the V1, V6 and !(V1, V6) could be missleading. The exclamation mark in front of the option code means it's not present. Which looks like there was a third body available, but can't think of it

But another diagram comes handy:
V2x is the Panorama, and V6 is the Combi with incrementing trim levels. That can be important for your swap - the door card and / or the handle can be different.
I've also checked this diagram:
The part marked as 4 is different for the power windows option, so you'll probably need to swap it, too:
The other parts on this diagram are common.
The armrest seems to be common, too:
However the unmarked panel in the center can be found on another diagram:
And definitely is different, as the manual version surely has a hole for the handle (2 of them have the E028 option listed).
I've also checked the locks etc diagram:
The list is very long (as the handle and ornament 8 and 9 and lock 13 differ), but none of them depends of the manual / powered windows option.
Having in mind all of the above plus:
it’s got the same lock style & wingmirror style.
I assume it
should be easy to swap the door from the donor van, install in yours and then put your van's window mechanism and the interior panel, protection, handle and ornament.
Double check the headlights / bumper style, you'll see if both are the 223 model
I have not checked that, but if the Doblo door has a barrel in the lock / external handle, be sure to swap it, too in order to have the same key.