If I wanted to go down the DDR4 route, I would go for AM4. But you guys just dissuaded me from doing so... 😀If the budget is tight, you can explore Intel i5 12400 and B660 DDR4 build.
The Intel 15th gen Bartlett lake will use LGA 1700, so the 15th gen CPUs should be compatible with your mobo if you update the BIOS.