Didn't see this post before. The reason why these are named like this as opposed to the typical naming convention used for arcade cabinets (
Game Name (Cabinet type)) is because these Arcade1Up machines are the same type of machine as a retail emulator cabinet. Those have already existed in the database (and IRL) for many years, so their names use that format.
retail releases or cabinet kits for multigames
For cabinets that are sold at retail with emulators, such as Big Electronic Games Konami Arcade Machine:
https://vgcollect.com/item/88008
Now for whether there should be a space in the name (Arcade1Up vs Arcade 1Up), the boxes are inconclusive. When these were renamed, I had to dig through all of the pictures of these cabs on Ebay to determine what was correct but found it was used both with and without the space. In the manuals do not have a print version of the name, only Tastemakers.
On their
website, their copyright at the bottom does not have the space:
© 2021 Arcade1Up.
So the non-space version was what was chosen.