Toyota Aygo is no longer produced. Replaced by Aygo X - a somewhat bigger car.
Renault Twingo is produced, but is not offered in some countries (I know about UK and Poland).
Peugeot 108 is no longer produced and AFAIU a successor was cancelled. Same thing for sibling Citroen C1. Aygo was also a sibling model.
Suzuki Ignis is a crossover now.
Skoda Citigo is no longer produced. Its sibling model VW Up is still produced, but other sibling Seat Mii is not.
Smart is a bit in a class of its own. It is not cheap though. Toyota had iQ in this class - it is no longer produced.
That leaves us with Hyundai i10 and its sibling Kia Picanto, Fiat Panda which is just a bit bigger then usual in the class, Fiat 500, aforementioned VW Up and Mitsubishi Mirage (also called Space Star in some countries). For me this is a sign of the class being less represented. I think it can go in other direction when electric cars will finally be cheaper, but it will not happen for a couple of years.