On iPhone SE “Next” Button in “Create new site” screen overlaps some of the text:

This one needs design review IMO. Adding that tag.
We reviewed this and we have two options, of which we'd like to consider for now the one that is more technically simple and maintainable:
Which one is more technically feasible?
We reviewed different options in the discussion that reached the conclusion above. We explored:
@mattmiklic also noted that "this resolution will continue to decline in popularity" to frame properly the extent of the issue. Also, as noted by @iamthomasbishop this is impacted not just by screen size, but also by typography size settings.
Thomas also provided a mock of an approach discussed for variable font size that matches (2) above:

And he pointed out that iOS already have "Done" on keyboard toolbars (inputAccessoryView):

The agreement is that we should find a solution that is technically simple to maintain, but at the same time solves the issue. Other solutions exist, but would require a larger refactoring of the bottom/top navigation UI.
I added "Needs Code Review" as there's no specific "Needs Technical Assessment" label.
This issue has been marked as stale because:
[Pri] Blocker, [Pri] High, or good first issue.Please comment with an update if you believe this issue is still valid or if it can be closed. This issue will also be reviewed for validity and priority (cc @designsimply).
I tested this in 11.8 and 12.0-beta with iPhone 6S iOS 12.1.4 and used Settings > General > Accessibility > Larger Text to simulate a case where the button might overlap and found it appears option B has been used where the bottom right button is in a fixed position with no text wrapping.

Here are some extra screenshots from WPiOS 11.8 (left) WP Internal 12.0.0.20190311 (right) on iPhone 6S iOS 12.1.4 for reference (there are no overlaps but you can see how the overall design has changed).
I am adding this issue to the Site Creation : iOS project for a quick check on iPhone SE to confirm no further action is needed. Please close this issue and remove [Status] Needs Code Review if that's the case or comment noting what still needs to be done if changes are still needed.
@ctarda @stevebaranski can one of you please take a look at this one?
@designsimply thanks for surfacing this.
The original issue was reported against the "circa 2018" Site Creation flow shortly after it was deployed last year.
The screenshots here juxtapose that experience with the new Site Creation flow rolled out in v11.9. The step depicted in the flow was implemented as Option B describes (i.e., with NUXButton).
I believe it can be closed; I will do that (& remove the label) as requested.
The problem still occurs on login screens:

At the time this issue was made, both login and site creation used the same base UI. Now that they've diverged, the fix for this issue should be ported back to login screens as well.
@designsimply should we create a new issue to track that, or reopen this one?
@nheagy to be filed against WordPressAuthenticator, yes?
@stevebaranski I prefer to log UX issues on the app(s) vs. the pods, where I feel they get lost. But I defer to @designsimply’s judgement.
@designsimply should we create a new issue to track that, or reopen this one?
A new issue about the log in screen with the designs copied over would be great since it's a different area of the app. @nheagy, I agree about filing on the app repos for the reason you mentioned.
To close the loop here, I found an earlier report of the problem with the login screen at #8790 and reopened it.