Some of these graphs display several non-exclusive (sometimes totally independent) things in a pie chart. For example, the second one shows "on-site", "full-ti

Some of these graphs display several non-exclusive (sometimes totally independent) things in a pie chart. For example, the second one shows "on-site", "full-time", "remote", "intern", and "visa". Remote/on-site seems like a mutually exclusive pair, but full-time/part-time seems logically and practically independent from that (and "part-time" isn't shown in the pie chart); "visa" probably logically implies on-site; "intern" likely implies on-site in practice; and both "visa" and "intern" probably imply full-time in practice, but not logically; and I think "visa" and "intern" are probably logically and practically independent of each other. And many jobs list multiple languages, multiple frameworks, and even multiple of the things in the "databases" category. I suspect each datum is best considered by itself, as "N% of postings mentioned X". Could be displayed as a bunch of bar graphs or something.