Magento 2 - Enable other options in TinyMCE

Create plugin of Wysiwyg configuration file in your module

etc/di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Ui\Component\Wysiwyg\ConfigInterface">
        <plugin name="Saphal_tinymce" type="Saphal\Tinymce\Plugin\Config" sortOrder="5"/>
    </type>
</config>

Now create plugin class in your module:

Company/Module_Name/Plugin/Config.php

namespace Saphal\Tinymce\Plugin;
class Config {
protected $activeEditor;

public function __construct(
\Magento\Ui\Block\Wysiwyg\ActiveEditor $activeEditor
){
	$this->activeEditor = $activeEditor;
}

public function afterGetConfig(        
	\Magento\Ui\Component\Wysiwyg\ConfigInterface $configInterface,
\Magento\Framework\DataObject $result
) {
        $editor = $this->activeEditor->getWysiwygAdapterPath();
        if(strpos($editor,'tinymce4Adapter')){
        if (($result->getDataByPath('settings/menubar')) || ($result->getDataByPath('settings/toolbar')) || ($result->getDataByPath('settings/plugins'))){            return $result;        }
        $settings = $result->getData('settings');
        if (!is_array($settings)) {
			$settings = [];
		}
        $settings['toolbar'] = 'undo redo | styleselect | fontsizeselect | forecolor backcolor | bold italic underline strikethrough | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | table | image | code | bold | italic | underline | strikethrough | alignleft | aligncenter | alignright | alignjustify | alignnone | formatselect | fontselect | cut | copy | paste | outdent | indent | blockquote | undo | redo | removeformat | subscript | superscript | visualaid | insert | hr | bullist | numlist | link | unlink | openlink | charmap | pastetext | print | preview | anchor | pagebreak | spellchecker | searchreplace | visualblocks | visualchars | help | fullscreen | insertdatetime | media | nonbreaking | save | cancel | tabledelete | tablecellprops | tablemergecells | tablesplitcells | tableinsertrowbefore | tableinsertrowafter | tabledeleterow | tablerowprops | tablecutrow | tablecopyrow | tablepasterowbefore | tablepasterowafter | tableinsertcolbefore | tableinsertcolafter | tabledeletecol | rotateleft | rotateright | flipv | fliph | editimage | imageoptions | fullpage | ltr | rtl | emoticons | template | forecolor | backcolor | restoredraft | insertfile | a11ycheck | toc | quickimage | quicktable | quicklink';

$result->setData('settings', $settings);
return $result;
}
else{
	return $result;
	}
}
}