As I tried to get across in my previous post, I would be very hesitant about over interpreting the rankings - often the indicators are very misleading and tell you very little in reality. One of the main issues is that nobody studies these degrees at more than one university so it's difficult to make comparisons. Furthermore, if you had the exact same lecturers and teaching at two different unis, it's unlikely that the students would give the same teaching quality scores in the evaluation surveys, ultimately students at different unis have different expectations and standards - something which these surveys simply can't take into account.
Moreover there is an implicit employment incentive to give your university a very supportive review in these student surveys. When you go through each ranking measure, it's easy to see how they're actually quite counterintuitive and don't really tell you what you want to know.
On the teaching quality metric specifically, again, the devil is really in the details. The Guardian rankings use a measure of student satisfaction for this. The issue here is that student dissatisfaction tends to be pretty strongly correlated with how tough and rigorous a course is - especially courses where there is a strong quantitative component like economics. If you're doing very advanced classes and it's difficult, you're probably not going to be having a super fun time, but does this mean the teaching quality is poor? No, of course not.
This is why when you sort by teaching satisfaction on the guardian rankings, you're not getting what every knows to be the best courses at the top. For example, you'll see the economics courses with the highest teaching satisfaction are Hertfordshire, Bangor, Brighton, and Strathclyde - do you really think these are actually the courses with the best teaching? On the Times rankings the top 4 courses with the highest teaching quality are Hertfordshire, Brighton, Hull and Huddersfield.... Do you think these courses have a higher teaching quality than places like Oxbridge/LSE/UCL/etc. And I'm not saying this to do down those other courses, but it just highlights that certain ranking measures provide very little signal and is mainly just noise).
You get similar issues on most of the other measures used in rankings too. The best (albeit still fairly flawed) set of rankings is probably the REF 2021 economics rankings, here you generally see the sort of unis you'd expect in the right places, though it is more of a research based ranking so is still imperfect. Whereas even when you look at the overall economics scores at ones like the Guardian, you've got stuff like the University of Stirling in 6th...... above the likes of UCL, Durham, Bristol, Notts, Edinburgh, Bath, etc. The guardian has Bristol in 40th, Notts at 45th and Manchester at 51st..... honestly the rankings aren't worth the HTML they're written on.
Another thing to do would be to look on LinkedIn at the sort of job roles you think you might be interested in at the sort of organisations you think you may want to work for, see where lots of them studied. Connect with people in these industries to msg them about their thoughts on which universities are disproportionately represented in their firm/industry/etc as this is the reality.