front-page.php

$context = Timber::get_context();
$context['slides'] = Timber::get_posts('post_type=slides');
$context['pages'] = Timber::get_posts('post_type=page&posts_per_page=2');
$context['portfolio'] = Timber::get_posts('post_type=portfolio');
$context['posts'] = Timber::get_posts(); //leave blank for default page query
Timber::render('front-page.twig', $context);

front-page.twig

{% for slide in slides %}
	{% include 'tease-slide.twig' %}
{% endfor %}

{% for page in pages %}
	<article>
		<h3>{{page.title}}</h3>
	</article>
{% endfor %}

{% for item in portfolio %}
	{% include 'tease-portfolio.twig' %}
{% endfor %}

{% for post in posts %}
	{% include 'tease-post.twig' %}
{% endfor %}