Getting Canon R7. Which UWA?

My Canon R7 and 18-150 is on order and I’m now thinking about UWA.

I’ve used a Sigma 10-20 on my APS-C Pentaxes.
What for Canon?

I know I need an adapter so two questions:

Which adapter?
There are two, one being twice the price. Benefits? What about 3rd party?

Which UWA?
Seems to be 3 options
Sigma 10-20 again.​
Canon EF-S 10-22​
Canon EF-S 10-18​

The 10-22 and Sigma are similar size and weight; the 10-18 is smaller and lighter but possible cheaper construction.
Getting mixed messages about quality.

So comments appreciated

I did like the EF-s 10-18 when we still had a few canon APS-c Eos camera's. a nice light lens that delivers good results and even had IS

Bryan's review:

I think it’s likely Canon will announce something like this and I’d also wait for it if possible. Third party lenses often have focusing problems with the R series. Although that’s not much of a problem at 10 to 22 mm, I’d rather not deal with the hassle.

I am very happy with my EF-S 10-22. You can get mint condition used lenses through Ebay for about $150-200. Prices keep dropping for the EF/EFS lenses. I don't mind using the adaptor on my R7, especially at those prices. I just bought an EF 100 macro for about $200. This is not a blemish or any sign of use. It was shipped, no charge from Japan and arrived in 4 days.