Oktoberfest is (nearly) here so a ton of them-

• Madtree Ziegler
• Rhinegeist Franz
• Esoteric Festbier (this is fantastic IMO)
• Sam Adams Oktoberfest (a classic)

There might be more in distro now but this is what I recall seeing the last time I bought beer.

Regional

• Sierra Nevada Festbier collab with Gutmann Brauerei in Bavaria