The CAN bus wires can be routed in parallel. Twisted and/or shielded cables are not necessary, but may be recommended depending on EMC requirements.
The main problem with your CAN bus "hub" is that you will most likely introduce an excess of unterminated cable stubs. The stubs should be as short as possible. At 1 Mbps, for example, the stub length shouldn't be longer than 30 cm (see ISO11898-2).
AN96116 (chapter 6.5 Unterminated Cable Drop Length) specifies a rule of thumb for the stub length:
\$L_U < \frac{t_{PROPSEG}}{50\times t_p}\$
Edit
i dont quite understand what you mean by cable stubs. Do you mean the "ports" for the nodes on my pcb that arent connected to anything?
No. Stubs are the unterminated drop cables that connect nodes to the CAN bus (highlighted in red). They are unavoidable. But a CAN bus "hub" probably doesn't help to alleviate the problems that stubs can cause.
![enter image description here](https://cdn.statically.io/img/i.sstatic.net/OIz3z.png)