Given they started in 1909 and evolved from there for a good number of decades, yes, there are a number of models.
The Weck Sextoblade is the main disposable blade straight and that goes back to the original 1909 patent. You can get black and ivory coloured scales for a really classic look but also lucite later on - I've got red and had a blue sparkling one. There's also really early ones with cardboard scales and the pre-market which is stamped.
Then, there was the Weck Orderly which is all stainless. This was, I gather, issued to the US Navy Medical Corps and will often have that branded onto the scales. This is a nice one to have, but it is heavy and unless you're used to all stainless straights it will feel heavy. It is a beast. Presumably, this is a pre-surgery prep razor.
That razor does have a little sister, the Weck Bantam. I've also seen a brochure where it was referred to as a Weck Nurse's Razor. It's lighter than the Orderly and a tad smaller. All stainless again, though.
I think that was about it for Weck themselves on the straights front. The format was picked up by Diane, Fromm, Burmax, Personna, etc and marketed later on as hair shapers. They do still do a good job of face shaving, naturally. Also consider the same format from Dubl Duck - I've had a pink and a purple one from their brand. Nice if you've other Dubl Ducks in your straight collection.
I put together a post on another forum about Weck:
https://www.atgshaving.com/threads/weck-1909-on.17431/
... the blade will fit into these medical/surgical razors as well:
https://www.theshavingroom.co.uk/community/index.php?threads/weck-surgical-prep.30374/
Blades? Personna is about it for today, but if you can get hold of Diane brand then do get those in. They're platinum whereas Personna is regular stainless.