Old song recommendations

Hello there, I usually listen to newer jpop songs but recently I have been really fascinated by the older Japanese city pop songs (idk if that is what they're called) and would like to listen more of them, some of the older songs that I really liked are listed below in order of how much I enjoyed listening to them –

1. Stay with me – Miki Matsubara

2. Plastic love – Mariya Takeuchi

3. Love letter from Canada – Masaaki Hirao & Yoko Hatanaka

4. Crystal Dolphin (2020 Remastered) – Kingo Hamada

5. Flyday Chinatown – Yasuha

These are just some of the songs that I really liked but please feel free to recommend any old songs that you liked, Thank you.