@trans_rescue
https://www.gov.uk/check-uk-visa is awesome and https://www.gov.uk/check-uk-visa/y/usa/work/longer_than_six_months probably applies to many people considering the UK.
I'm going for UK naturalisation soon, whenever I can pass the awful Life in the UK Test. (New residents don't need to think about LitUK prep or anything, but the fees for any application are expensive.
You also generally have to apply from your country of nationality (/ residence?) in advance, but I will check on that. Might have changed, too, tbf.
https://www.gov.uk/entering-staying-uk
Anyone with professional qualifications, especially "Health and care professional, Digital technology professional, Academic or researcher, Work in arts or culture, Professional sportsperson, Religious worker, I want to start a business."
https://www.gov.uk/skilled-worker-visa
According to https://www.gov.uk/skilled-worker-visa/your-job, "The minimum salary for the type of work you’ll be doing is whichever is the highest of:
£38,700 per year, OR the ‘going rate’ for the type of work you’ll be doing."
I work(ed) in IT and never came close to that. Unfortunately, this particular route is not likely to include most people under 35, except maybe the furries or something. (But other VISAs might be fine.)
https://www.gov.uk/check-uk-visa/y/usa/work/longer_than_six_months/other has a good amount of detail to start with.
However, the current nickname of 'TERF Island' is worth bearing in mind. If people have british or irish family, probably still less disruptive to come here, but their HRT is very likely to be disrupted following the stil-upheld Cass Review (or report, icr).
People from or with Commonwealth Country family or birth certificates are also well-placed to come, but again, bear in mind the Windrush scandal, where the gov insisted on trying to deport people who were here perfectly lawfully ffs.
Any EU people https://www.gov.uk/settled-status-eu-citizens-families