Nutmeg
Arcane
Have you played the first two Raiden Fighters?Raiden Fighters Jet
Jet is a far more intense experience. All stages are bite sized and the patterns are hyper-aggressive. The stages are capped with Toaplan style bosses, except also hyper aggressive. The first non simulator battle is also an exercise in speed killing to avoid practically invisible bullets -- a really cool effect when you first play it "wow it's nothing like the simulator!".
In contrast, the first two games follow the format of two missions consisting of two bite sized stages with more traditional Toaplan style layouts, followed by one longer stage which consists almost entirely of a single multiple screen spanning boss. In these mega boss stages, the camera pans around both horizontally and vertically as you, the player, fight the scrolling in order to dismantle all the boss's turrets and defenses coming in and out of view while trying not to get sniped. It's a really unique experience -- only Omega Fighter did something remotely similar.
All three games are great but I think the first two might be better choices for players that don't care so much about an extremely high skill ceiling.