The plugin management for GrapesJS is located at Silex/src/ts/client/grapesjs/index.ts. I added a GrapesJS plugin using the following code:

import { yourPluginName } from 'your-plugin';
// rest of the code......
const plugins = [
    { name: 'your-plugin', value: yourPluginName },
];

Blocks The additional GrapesJS plugins that have been successfully integrated are:

grapesjs-tui-image-editor
grapesjs-typed
grapesjs-tabs
grapesjs-component-countdown
grapesjs-navbar

Additionally, I modified the options in grapesjs-blocks-basic to enable all blocks.