The Dell XPS M line have a matte finish. What is a matte screen?
Yes - they are called Lenovo Thinkpads as far as matte goes. Discrete graphics are available. Don't know about HDMI, but I would imagine it is also an option.
HDMI isn't an option on the core ThinkPad lineup. HDMI just isn't a "business" connector, so your standard ThinkPads sport VGA and Display Port support.
I think the New ThinkPad "Edge" models offer HDMI, as they are more SMB focused than corporate focused. Looks like they are available in both glossy and matte finish.