I'm looking for a collection of novel EVA suit designs, which are serious (are more than a mere art station create)
Spacesuit development has been rather low on the NASA priority queue ever since the Human Spaceflight programs were crippled due to the end of the Shuttle program and because there wasn't really any direct application for a new suit. That said, the Z-Series spacesuit development has been simmering in the background since 2014 to develop the "Z-2" suit which looks like it's almost complete. It was slated to go through some final testing rounds last year and NASA has done some publicity indicating that this new suit (now called the xEMU) will be the one used for Lunar (Artemis) missions.
There isn't that much extremely "novel" about the xEMU suits (mostly a generational improvement) but they do have some major features that set them apart from suits currently in use on the ISS or those used during Apollo:
- Suitport entry: astronauts slip into the suit through a port in the back. This speeds up don/doff and allows them to be used as an essential personal airlock.
- Updated PLSS: the Personal Life Support System is the core function of the suit and it's been updated to work with modern technology and computer control
- High Pressure: through the use of hard components and bearings, the xEMU can maintain a higher internal pressure which prevents the astronauts needing to acclimatize to the pressure before and after using the suit.