DWG is definitely the standard - so whatever you look for should be able to export to DWG.
Basic autocad is fine if you have a good symbol library and can keep good documentation of the components you use.
There are other autocad clones such as Bricscad (which offers a perpetual license and lisp, plugins, etc that autocad LT does not) or ZWcad.
- - Side Rant - - Log read - -
On the subject of a 'good' symbol library, Autocad Electrical does not have one IMO. Because Autocad is based in the auto industry, there are some pretty dumb and archaic standards built into autocad electrical - like "D" sized sheets and symbol libraries that, when printed on 11x17 or 8.5x11, are nearly illegible IMO. That said, it is the standard and you do see many companies use it (not the auto industry anymore, ironically enough). You can completely re-do the symbol library and autocad electrical can be a very powerful tool, but it takes a lot of time to get to that point.
Most of the Auto industry has switched to Eplan, which is nice (but waaaay too expensive to be taken seriously) and at least has a good symbol library and fairly legible design standards (ie, 11x17 symbols as opposed to D size). IEC standards are also 11x17 (or A3 which is close), and most electronic schematic software works on a 0.1" grid (2.54mm - same as IEC which works on a 2.5mm grid)
Use a grid, and find or create a symbol library you like. There are a few online. Scale the symbols to the grid pattern that works for you. I'm personally fond of a 2mm grid (I do my drawings in metric) with most text at 2.5mm and some at 2mm minimum (this is how some of the auto industry is doing schematics at the moment in Eplan)
Radica Electra has some decent symbols in DWG format that are free to download:
https://radicasoftware.com/
I've used thier software, and I wold avoid it, personally. Autocad is just as capable.