Render Array template #drupal8

RenderElement.php

// Test Field

$render['myTextField'] = [
	'#type' => 'textfield',
	'#title' => t('My title'),
];

// Number Field

$render['myNumberField'] = [
	'#type' => 'number',
	'#min' => '0',
	'#max' => '100',
	'#step' => '1',
	'#size' => '9',
	'#title' => t('My title'),
];

// Link with button aspect
$render['myButton'] = [
	'#type' => 'link',
	'#title' => t('MyTitle'),
	'#url' =>  \Drupal\Core\Url::fromUserInput('/myPath'),
];
$render['myButton']['#attributes']['class'][] = 'ui green button';

// Select 
$render['mySelect'] = array(
        '#type' => 'select',
        '#title' => $this->t("myTitle"),
        '#options' => [
            '1' => $this->t("option1"),
            '2' => $this->t("option2"),
            '3' => $this->t("option3"),
        ],
    );