Blog Masonry different layout for Blog front page and for Archives

Tough question! Try this (untested):

add_filter( 'generate_masonry_post_width', 'tu_custom_masonry_width' );
function tu_custom_masonry_width( $width ) {
    global $wp_query;
    $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;

    if ( is_home() ) {
        if ( $wp_query->current_post == 0 && $paged == 1 ) {
            return 'width6';
        } else {
            return 'width4';
        }
    }

    if ( is_archive() ) {
        return 'width4';
    }

    return $width;
}

Well, it does not work, only one column is displayed. Maybe because I use content/sidebar/sidebar for is_home() and content/sidebar for is_archive().

Thanks

Can you link me to each respective page?

I am still testing on local host. I am about to go online. As soon as my site is online I will post a link here for you.

Thanks

Blog page link: http://telezjetele.cz

Archieve page link: http://telezjetele.cz/rubrika/doporucujeme/

It doesn't look like masonry is turned on.

Sorry, I forgot I don't use masonry due to lazy loading issues. Can you please modify a/m filter for columns?

You could try this:

add_filter( 'generate_blog_get_column_count', 'tu_custom_columns_width' );
function tu_custom_columns_width( $width ) {
    global $wp_query;
    $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;

    if ( is_home() ) {
        if ( $wp_query->current_post == 0 && $paged == 1 ) {
            return 'featured-column';
        } else {
            return 50;
        }
    }

    if ( is_archive() ) {
        return 50;
    }

    return $width;
}

It seems it has no effect http://telezjetele.cz/rubrika/doporucujeme/

Ok, since we're just wanting to remove the featured column on any page but the home page, we can do this instead:

add_filter( 'post_class','tu_remove_featured_column' );
function tu_remove_featured_column( $classes ) {
    if ( ! is_home() ) {
        $classes = array_diff( $classes, array( 'featured-column' ) );
    }
	
    return $classes;
}

Thank you!

You're welcome :)