Here are the system requirements (macOS) for The Sims 2:
Operating System: 10.9.5 (Mavericks), 10.10.5 (Yosemite), 10.11 (El Capitan), 10.12 (Sierra)
CPU Processor: Intel Core 2 Duo (Dual-Core)
CPU Speed: 2.2 GHz
Memory: 4 GB RAM
Hard Disk Space: 10 GB
Video Card (ATI): Radeon HD 3870
Video Card (NVIDIA): Geforce 8800
Video Card (Intel): HD 3000
Video Memory (VRam): 256 MB
Peripherals: Macintosh mouse and keyboard
...and The Sims 3:
Mac OS X 10.5.7 Leopard or higher
Intel Core Duo Processor
2 GB RAM
ATI X1600 or Nvidia 7300 GT with 128 MB of Video RAM, or Intel Integrated GMA X3100.
At least 6.1 GB of hard drive space with at least 1 GB of additional space for custom content and saved games
...and The Sims 4:
OS: Mac OS® X 10.7.5 (Lion)
PROCESSOR: Intel Core 2 Duo 2.4Ghz Processor or better
VIDEO CARD: NVIDIA GeForce 320M, 9600M, 9400M,ATI Radeon HD 2600 Pro or better. Video RAM of 256MB or better.
MEMORY: 4GB RAM
HARD DRIVE: 10 GB of Hard Drive space
INPUT: Keyboard and Mouse
So you're pretty good to go with with all three of them. As for The Sims 4 though? Why not try the free demo of The Sims 4 (it's fully functional for 48 hours)? Where to get it? Why, here:
https://www.origin.com/gbr/en-us/store/the-sims/the-sims-4/standard-edition
If you've got a Boot Camp partition with Windows on it you should be fine with all three too.
Hope this helps!
