I have a SME 3009 Series II Improved on an Ariston RD11 and went through a similar journey to you a few years ago. The turntable came without a cartridge and I stuck on the first spare cartridge I had lying around, which was a Nagaoka MP 11 Boron. I had no idea about compliance at this stage or might have thought twice about it, but amazingly it worked fine. The modern equivalent is a Nagaoka MP 200, so that is a potential candidate.
I then tried the vintage route, picking up a Shure V15 Type III for £95 on EBay, which seems to be the classic combination with the arm. It didn’t sound as good as the Nagaoka, but one caveat is that I didn’t recognise the stylus on the V15 and suspect it was a cheap clone. Other people seem to get good results using Jico V15 replacement styli, so that is another potential route for you.
I currently use an Audio Technica AT-OC9XML, an MC cartridge, with excellent results. I wasn’t sure if it would work and must admit, I was sweating when I installed it, but I have had no issues and the sound is amazing.