That is indeed very compact. I like compact keyboards too. You didn't mention gaming so I'm going to assume you don't care too much about that.

If you live near a Best Buy, pay one a visit, they usually have keyboards on display which you can type on. I suggest trying at least the following:

1. Logitech MX Keys Mini. This provides a very nice laptop-like typing experience.

2. Logitech G815/915. This is a "gaming" keyboard with low profile mechanical clicky ("blue") switches.

Based on that, you can decide if you care about mechanical switches or not. If you really like the low-profile clicky feeling, the Logitech are great, but wide compared to your Thinkpad, and also expensive (>$200). Keychron has narrower versions with lots of customizability. There's some other vendors too, here's a list [1].

If you prefer the laptop-like typing experience, the MX Keys and the new Mini variant are very popular, for a good reason.

1: https://www.reddit.com/r/MechanicalKeyboards/comments/hotiws...

You’re in luck! There are a number of USB Lenovo thinkpad keyboards with track points, and sometimes trackpads in full and ten key-less formats. (I believe it’s also fairly straightforward to convert a ‘replacement’ x220/x230 keyboard to USB). Here’s a couple of model numbers to get started: FRU 0B47221 FRU 40K9427

This is a very extreme and stupid suggestion, but... https://tex.com.tw/products/shinobi?variant=16969883648090

I also have a Lenovo laptop, it’s an Ideapad. And am very happy with how it is for coding - which is what I use it for.