This demo uses imperative chart updates. The generated code is a faithful Angular translation: open it in CodeSandbox to run and tweak.

import { Component, AfterViewInit, OnDestroy, ViewChild } from '@angular/core';
import {
  ChartComponent,
  ApexAxisChartSeries,
  ApexNonAxisChartSeries,
  ApexChart,
  ApexXAxis,
  ApexYAxis,
  ApexTitleSubtitle,
  ApexDataLabels,
  ApexStroke,
  ApexFill,
  ApexLegend,
  ApexTooltip,
  ApexMarkers,
  ApexPlotOptions,
  ApexResponsive,
  ApexGrid,
  ApexAnnotations,
  ApexStates,
  ApexTheme,
  NgApexchartsModule,
} from 'ng-apexcharts';

export type ChartOptions = {
  series?: ApexAxisChartSeries | ApexNonAxisChartSeries;
  chart?: ApexChart;
  xaxis?: ApexXAxis;
  yaxis?: ApexYAxis | ApexYAxis[];
  title?: ApexTitleSubtitle;
  subtitle?: ApexTitleSubtitle;
  dataLabels?: ApexDataLabels;
  stroke?: ApexStroke;
  fill?: ApexFill;
  legend?: ApexLegend;
  tooltip?: ApexTooltip;
  markers?: ApexMarkers;
  plotOptions?: ApexPlotOptions;
  responsive?: ApexResponsive[];
  grid?: ApexGrid;
  annotations?: ApexAnnotations;
  states?: ApexStates;
  theme?: ApexTheme;
  colors?: string[];
  labels?: any;
};

@Component({
  selector: 'app-chart',
  standalone: true,
  imports: [NgApexchartsModule],
  templateUrl: './chart.component.html',
})
export class AppChart implements AfterViewInit, OnDestroy {
  @ViewChild('chart') chart!: ChartComponent;
  public chartOptions: Partial<ChartOptions> = {
          series: [
            {
              name: 'Q1 Budget',
              group: 'budget',
              color: '#80c7fd',
              data: [44000, 55000, 41000, 67000, 22000, 43000],
            },
            {
              name: 'Q1 Actual',
              group: 'actual',
              color: '#008FFB',
              data: [48000, 50000, 40000, 65000, 25000, 40000],
            },
            {
              name: 'Q2 Budget',
              group: 'budget',
              color: '#80f1cb',
              data: [13000, 36000, 20000, 8000, 13000, 27000],
            },
            {
              name: 'Q2 Actual',
              group: 'actual',
              color: '#00E396',
              data: [20000, 40000, 25000, 10000, 12000, 28000],
            },
          ],
          chart: {
            type: 'bar',
            height: 350,
            stacked: true,
          },
          stroke: {
            width: 1,
            colors: ['#fff'],
          },
          dataLabels: {
            formatter: (val) => {
              return val / 1000 + 'K'
            },
          },
          plotOptions: {
            bar: {
              horizontal: false,
            },
          },
          xaxis: {
            categories: [
              'Online ads',
              'Sales Training',
              'Print ads',
              'Catalogs',
              'Meetings',
              'Public relations',
            ],
          },
          fill: {
            opacity: 1,
          },
          yaxis: {
            labels: {
              formatter: (val) => {
                return val / 1000 + 'K'
              },
            },
          },
          legend: {
            position: 'bottom',
            clusterGroupedSeriesOrientation: 'vertical',
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}
Grouped Stacked Column - Angular Column Charts | ApexCharts.js | ApexCharts.js