Not all winch mounts are made equal which means that some are able to withstand heavier weights than others. Almost all regular winch mounts out there are 1/4” or 3/16” as these two are commonly used as the industry standard. The general rule of thumb is to go for a winch that can withstand double the weight of your car which also means going for a winch mount that can do the same.
Most winch mounts are bolted directly onto the frame, but some can even go on factory bumpers, specialty bumpers, or specialty bull bars. If you decide to go through the bumper route, be sure to get a professional welder to reinforce your bumper/bull bar if needed. You also need to keep in mind that the majority of stock bumpers don’t come with bolt holes which will require drilling into your bumper.
If you often take your Ford Bronco through muddy trails and puddles, you should also consider buying a waterproof winch mount that can easily withstand consistent exposure to water without corroding. This means going for either IP68 or IP69 certifications as these are as good as they come.
Steel plate-mounted winches are the cheapest and are mostly irremovable while portable winch mounts are designed for versatility and are really popular with part-time offroaders. Serious offroaders are likely going to go for heavy-duty winch mounts with roller leads that include roller fairleads and are by far the most expensive ones.