Linear polarisation fractions and absolute circular polarisation fractions for the 682 pulsars from Wang et al. (2023a). Grey diamonds are slow pulsars, and grey dots represent isolated MSPs or MSPs in non-spider systems (pulsars orbiting white dwarf companions or main sequence stars). Red stars are spiders that are not in the NRT sample, and green stars are the spiders analysed in this article. The values for the latter objects can be found in Table 7.