Yes, plenty! :)
I'd look at either the rotating seats, such as Britax Dualfix M Plus, Cybex Sirona G i-size or Maxi Cosi Mica.
Joie 360 spin is also popular in this category, but I would say that the straps aren't quite as nice/comfy.
Besafe izi Turn/Twist also have great straps but are more expensive.
The above can all be rear facing up to 105cm/18-20kg (depending on the seat).
They are isofix fitted - but they are all heavy and bulky, so not hugely easy to move from car to car. Unlike baby seats the toddler seats are usually permanently attached to the isofix base.
They spin to the side to make it easier to get the child in.
They are more upright than the baby seats, and can be reclined e.g. for naps.
Or you could look at the Swedish type rear facing seats, such as Axkid Move, Axkid Minikid 2 or 4, Britax Max Safe or Safe Way, Besafe Stretch.
These are all rear facing up to 125cm and 25-36kg depending on the seat.
They are seatbelt fitted, but they are lighter and easier to move in many ways than the spin seats. They also require the use of tethers around the front seat, of which spares can be purchased to leave in other cars to make swapping easier.
They are more upright than the baby seats and isofix fitted seats. In many of them you can choose the exact angle to your child's preference.
Lastly you could look at Joie i-Prodigi or Axkid One2 or Tinyseats2. These are isofix fitted versions of the Swedish type seats and have a 125cm/23kg limit. They are more expensive, but they are very light and easy to move. I understand that the Axkid is a bit more comfortable and open than the Joie. The Tinyseats is designed to be a portable seat so may be less comfortable.
You could also look at the Cybex Sirona Z if you can still find it in stock anywhere, as this will work with your base. But it's more expensive than e.g. the Cybex Sirona G i-size and it is an older model. It also means that your base is in use so you can't reuse the base if you have another baby.