Its possible to set different shapes and icons as marker inline chart. Here is script to set different types of markers based on condition
widget.on('processresult', function(se, ev){
$.each(ev.result.series[0].data, function(index, value){
if(value.y <= 5000){
value.marker.symbol= 'url(https://img.icons8.com/emoji/30/000000/flag-in-hole-emoji.png)'
}
else if(value.y <= 10000){
value.marker.symbol= 'url(https://img.icons8.com/emoji/30/000000/kite-.png)'
}
else if(value.y <= 15000){
value.marker.symbol= 'triangle'
value.marker.radius= 10
value.marker.fillColor= '#e6b122'
}
else{
value.marker.symbol= 'square'
value.marker.fillColor= '#1d5ecf'
value.marker.radius= 10
}
})
})