BubbleChart

BubbleChart[{{x1,y1,z1},{x2,y2,z2},…}] makes a bubble chart with bubbles at positions {xi,yi} with sizes zi.

BubbleChart[{…,wi[{xi,yi,zi},…],…,wj[{xj,yj,zj},…],…}] makes a bubble chart with bubble features defined by the symbolic wrappers wk.

BubbleChart[{data1,data2,…}] makes a bubble chart from multiple datasets datai. 

Please visit the official Wolfram Language Reference for more details and examples on core symbols.