How to find package equivalents of 14.04 (trusty) in 18.04 (bionic)

I am migrating our software from Trusty to Bionic. On trusty, there were many dependencies which were manually installed, but many of those were removed/renamed in Xenial itself and not available on Bionic. For e.g., gdb-minimal, python-support etc. Is there any easy way to find the equivalent packages for these, on Bionic ? Or, will some of them have to built for Bionic if they are mandatory ?