Regardless of how similar the Switch 2 hardware is to the Switch, it will be awhile before it will be emulated successfully. First they will have to find an exploit, preferably a hardware exploit that can't be patched out, and it will have to allow for hypervisor/root access. Once they have that then the contents of the internal memory and games can be dumped. But even that won't be useful for anything until the encryption scheme is determined. Once that is done then an emulator can be made. Depending on how substantially similar they are luckily anyone who wants to make one can work forward from the Yuzu/Ryujinx source code.
But, even then, what hardware will be able to actually play any games will likely be limited, requiring at least an NVIDIA RTX 3060 or higher (likely a substantially more powerful AMD card since it would have to translate native NVIDIA calls), and a CPU with at least 8 cores (E or LP cores do not count) at an absolute minimum. According to this month's Steam hardware survey, less than 4 in 10 computer users meet those specs.
Given when Yuzu/Ryujinx became usable, I would imagine we won't see one that is usable until 2027/2028.