Common things about Psikyo games ported to Switch are that they don't have online leaderboards, wallpapers that are HD-ish with new HUD along with other stuffs presentation-wise. There's also the opportunity to play in vertical mode on the Switch console. However, there are some minor things that you may need to notice in terms of conversion method. Strikers 1945 II on Switch has missing frames for the explosions as if the game is based on the Playstation port.
During the time of Psikyo games on the 32-bit arcade system with the SH2 CPUs, they tend to have pre-rendered computer graphics with later Psikyo games going even more with that in a weird way like Sol Divide and Space Bomber for instance over weird gameplay and design concept like they were trying to test out the potential of the computer graphics on that system at the time. There were other games that were not shmup games on that same system as well but you can find some development surprises.
The IPs of Psikyo classics are now with Zerodiv and many of those classics are being re-released on Switch while ensuring that the presentation is more accurate. There might be PS2 Psikyo compilations although some of them have inaccurate presentations while having re-arranged music.
