the churches I see that deny Christ deity are Mormons, JHW I am sure there are many more. So you are saying these people can in there present state of denying Christ as God in the flesh are saved. ??
Backing up a moment to the Jewish population -- in the Old Testament the future birth of Jesus Christ was given in Isaiah 7:14 and was fulfilled in Matthew -- so the Old Testament people were looking Forward to the Future birth of Jesus Christ and either accepting Him in the Future or rejecting Him how He would be bruised for our iniquity, etc. , they knew -- just as 'we' look back at his birth and death on the cross and His bodily resurrection and either accept or reject what He did back in the New Testament times. The Jewish population rejected that. Messianic Jews Have accepted Him.
Any group that denies that Jesus Christ is the Son of God is denying the only means Of salvation.
Christianity is what Jesus Christ has already done on the cross for us. The shedding of His blood for us and His bodily resurrection.
Religions are usually aiming at good-works for salvation. But Scripture says that our 'good works' are but rubbish in God's eyes.
There Are churches that Do teach God's Word and Do teach the Gospel unto salvation. And that Do encourage outreach into the community with the Gospel unto salvation. It's a matter of finding one close to 'your' geographical area.
God's Word Also highly encourages people to get together on a regular / frequent basis to fellowship together -- in the Word -- be in God's Word learning and sharing. Christian fellowship is Needed.