Here are some popular PC processors currently available on the market, sorted by manufacturer:

Intel:

Intel Core i9

Intel Core i7

Intel Core i5

Intel Core i3

Intel Pentium Gold

AMD:

AMD Ryzen Threadripper

AMD Ryzen 9

AMD Ryzen 7

AMD Ryzen 5

AMD Ryzen 3

AMD A-Series APUs

Note that each of these processor families has various models and variations, so the above list is not exhaustive. Additionally, new processors are released frequently, so this list may not be up-to-date in the future