0$) of AP squirmers (interacting via long-range (panel-a) or short-range (panel-b) attraction) and of WP squirmers (interacting via long-range (panel-c) or short-range (panel-d) attraction).  ![\[fig:nct\_xi0\_0\] Time evolutions of the mean cluster size for squirmers when $\xi=0$ (pullers: red [squares]{} and black [circles]{}; neutral: blue [up triangles]{}; pushers: pink [down-triangles]{} and grey [diamonds]{}). (a) AP squirmers with $r_c=0.0\sigma$ and (b) $r_c=0.0\sigma$, (c) WP squirmers with $r_c=0.0\sigma$ and (d) $r_c=0.0\sigma$. Note the different scale on the y-axis. ](ntxi0rc00ttganso.pdf "fig:"){width="0.00\columnwidth"} ![\[fig:nct\_xi0\_0\] Time evolutions of the mean cluster size for squirmers when $\xi=0$ (pullers: red [squares]{} and black [circles]{}; neutral: blue [up triangles]{}; pushers: pink [down-triangles]{} and grey [diamonds]{}). (a) AP squirmers with $r_c=0.0\sigma$ and (b) $r_c=0.0\sigma$, (c) WP squirmers with $r_c=0.0\sigma$ and (d) $r_c=0.0\sigma$. Note the different scale on the y-axis. ](ntxi0rc00ttganso.pdf "fig:"){width="0.00\columnwidth"} ![\[fig:nct\_xi0\_0\] Time evolutions of the mean cluster size for squirmers when $\xi=0$ (pullers: red [squares]{} and black [circles]{}; neutral: blue [up triangles]{}; pushers: pink [down-triangles]{} and grey [diamonds]{}). (a) AP squirmers with $r_c=0.0\sigma$ and (b) $r_c=0.0\sigma$, (c) WP squirmers with $r_c=0.0\sigma$ and (d) $r_c=0.0\sigma$. Note the different scale on the y-axis. ](ntxi0rc00hhganso.pdf "fig:"){width="0.00\columnwidth"}![\[fig:nct\_xi0\_0\] Time evolutions of the mean cluster size for squirmers when $\xi=0$ (pullers: red [squares]{} and black [circles]{}; neutral: blue [up triangles]{}; pushers: pink [down-triangles]{} and grey [diamonds]{}). (a) AP squirmers with $r_c=0.0\sigma$ and (b) $r_c=0.0\sigma$, (c) WP squirmers with $r_c=0.0\sigma$ and (d) $r_c=0.0\sigma$. Note the different scale on the y-axis. ](ntxi0rc00hhganso.pdf "fig:"){width="0.00\columnwidth"}  