30 Day Sim contracts - Another adventure with spreadsheets

There will be another update as I missed Quidco and Uswitch. No doubt someone will remind me of others

I think there's monthly minimum spends to get the SIM for free. £100/month spend for 10gb the following month etc.

Agreed. Full marks for the great effort but very difficult to read on mobile phone.

That's half a day I won't get back

The title gives it away. "30 Day Sim Contracts".
Almost all of the sims offered show they will give 5G if available. I did start a column, but found I was just ticking the box on all.

Much like adding 5G or not, actual data speed, and roaming limitations, after scanning down the list the reader, and certainly the author, will experience an element of snow blindness. Also these deals are often changing, or have different terms for what looks like the same product. Asda has 3 around £24 that have different speed and data limitations, which would involve digging further into their site. There are around 200 lines on that spreadsheet, and to be honest I think I did more than enough work on that.
I have done the donkey work. It is not difficult to choose from a small group, the data limit you want, and the price range you are prepared to pay, and from there just go to the respective site. The next part that I am surprised I haven't received a whinge for yet (not aimed at you, just generally) is why not add the links? There is only so much I am prepared to do, but if people want to do the extra work then I would be happy to add it.
The more info added, the more that needs maintaining. Were I to put the roaming costs, only for Lebara to change them, then I would have to go through the whole lot again, before someone starts whinging that the details are wrong. However you can generally take it for granted that the limit is the same throughout the supplier's product, so read one and you have it all. But to make a purchase based on what info I posted, rather than your reading of the relevant small print, is poor consumer action, as I might have pasted the info into the wrong box.
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For your need in Europe, depends on how much data you need, I would suggest buying as many sims as you need, allowing for the fact that Lebara allows the data limit of your plan, up to 30gb per sim, per month. Any data outside of that requires a prior credit