Hi - If you look up Ramset or similar companies that sell mechanical anchors for concrete they have several threaded inserts with rough externals for this application. They also have design guides for strength and position. There are also epoxy set types and they have good design info for. Loxin is another.
https://ramset.com.au/Product/Detail/29/Threaded-Insert
The bond strength of grout to steel is very low so its important to use an odd shaped anchor to mechanically lock the anchor in place, its not really "bonded" in. I prefer to drill and epoxy the anchor in then its properly bonded in with little internal stress. Cast in anchors can eventually get cracks propagating from them due to the stress created in the plastic shrinkage stage of the cast especially if too close to a surface. I have been involved with lifting and holding down metal forming equipment in concrete floors and the epoxy type does better then the mechanical type. Its quite a fright when large chunks of concrete come out of a floor for instance when a few tonnes of machine comes loose and starts dancing.... Peter