If you're looking for mainstream lead and cpa networks, I've worked with a ton and these ones have always impressed me with their offers, approach and payments
MaxBounty - Best CPA network for affiliate marketing programs
PeerFly
F5 Media
They all have offers right across the spectrum so you can test and swap out to see what works best for you.
You can also check out
Affiliate Marketing | Affiliate Programs | CPA Offers | OfferVault to see what offers are available and compare payouts across networks.