This month the Lord of Print has Red Dragons and a Cthulhu type monster available for its Patreon release. TBH I also really like the little illithiad beasts too!
Lord of the Print has some great Dragons and other monster types that has really good sculpts.
Those dragons are spikey. Love it. Imagine these miniatures combined with the Artisan Guild Dragonguard release or the Decent into Madness release from Archvillain Games. They could complete your army!